- Wikipedia, Gov.uk, and BBC hold the top spots this month in the overall ranking.
- In e-commerce, John Lewis stays ahead, while Ikea climbs to 2nd place thanks to better LCP and INP.
- Telegraph, The Sun, and Office are among the biggest gainers across sectors.
- Meanwhile, Netflix, The Trainline, and Shein take a hit due to rising LCP and INP values.
📉 Travel remains the slowest sector, with only 11% of sites meeting all Core Web Vitals.
✅ Media leads the pack: 33% of sites in this sector meet all CWV thresholds, and 87% have fast-loading (green LCP) pages.
⚠️ E-commerce is struggling with responsiveness: just 26% of sites have a green INP—far below what’s acceptable for conversion-driven platforms.
Ready to see who’s rising—and who’s falling—in your sector?
It’s time to take a look at this month’s webperf rankings of the most visited sites in UK.
We are thrilled to launch our very first UK Speed Ranking. This ranking is divided into several categories: the 50 most visited sites, e-commerce sites, media sites, and travel sites. But before diving into the results, it’s crucial to remind why fast-loading websites are key to online success.
As a reminder, the score obtained for the sites presented in this article is calculated using a methodology based on CrUX (Chrome User Experience Report) data. In order to give the best evaluation of each site’s mobile web performance, we based our calculations on the weighting of the Lighthouse score :
- FCP represents 10% ;
- LCP represents 35% ;
- CLS represents 25% ;
- INP represents 30%.
CrUX provides an overall assessment of the Core Web Vitals metrics for each site analysed. This metric is calculated by taking the 28-day rolling average of the 75 percentile performance throughout the month. The overall performance score is determined by a weighted average of the scores for each metric. This score, rated out of 100, is used in the rankings below (so it is not the PageSpeed score that is used in the rankings below).
Why is speed crucial ?
Studies show that website performance directly impacts user experience, conversion rates, and revenue. According to Google, 53% of mobile site visitors leave a page that takes longer than three seconds to load. For UK e-commerce sites, this statistic is particularly concerning given the intense market competition.
A Deloitte study reveals that a 0.1-second improvement in mobile site speed can increase conversion rates by 8.4% for retail sites. These figures highlight the importance of prioritizing loading speed to stay competitive.
Top 50 : Webperf ranking of the top 50 most visited websites in the United Kingdom
Top 50 : Average of vital core web
🏆 TOP 3 LEADERS
No changes on the podium this month: Wikipedia, Gov.uk, and BBC continue to lead with flawless Core Web Vitals across the board.
🌟 NOTABLE PROGRESSIONS
Several shifts occurred within the top 15, driven by consistent performance gains:
- Ikea climbs to 4th place (+2), thanks to a slight INP improvement.
- Indeed (5th, +2) and Telegraph (7th, +3) both improved their LCP and INP.
- Temu (9th, +2) also made small gains across both metrics.
- The Sun (14th, +4) shows a -39 ms INP improvement and a slight LCP boost.
Further down the list:
- Daily Mail (22nd, +2) gains 116 ms on LCP and 25 ms on INP.
- Office (26th, +5) and Paypal (27th, +2) show solid LCP improvements.
- Tesco (36th, +2) improved its LCP by 135 ms, though its INP increased slightly.
- Microsoft (40th, +2) significantly improved its LCP (-356 ms), despite a higher INP.
- Vinted (41st, +4) saw strong progress with -247 ms on LCP and -13 ms on INP.
These sites reflect ongoing efforts to improve web performance, which will likely continue to positively impact user experience and engagement. These improvements are the result of consistent efforts to optimize their systems, with particular attention paid to INP. It’s worth noting that having a good FID does not necessarily mean having a good INP! FID only measures the first interaction, whereas INP assesses interactivity throughout the entire browsing session. The efforts made by these players to improve their web performance metrics are not only beneficial for their rankings but are also crucial for providing a quality user experience, reducing bounce rates, and increasing engagement on their platforms.
📉 CHALLENGES IN THE RANKINGS
Some websites dropped in the ranking due to performance degradations or stronger competition:
- The Guardian drops 4 positions (8th) with higher LCP and CLS.
- Santander, Etsy, News.sky, and Ebay each fall 2–3 positions due to rising LCP and/or INP.
- Diy (33rd, -5) saw an increase in INP and a CLS jump from 0.02 to 0.08.
- Just Eat (38th, -3) struggles across the board: +106 ms on LCP, +33 ms on INP, and a CLS increase of +0.17.
- Netflix (46th, -9) shows the sharpest drop this month, with a major INP increase (from 344 ms to 1053 ms) and LCP degradation (+527 ms).
These declines highlight the ongoing challenge of maintaining web performance amidst evolving user expectations and technical demands.
| Website | Ranking | Ranking M-1 | Score | LCP (in ms) | INP (in ms) | CLS |
| Wikipedia | 1 (0) | 1 | 100 | 1080 | 93 | 0 |
| Gov | 2 (0) | 2 | 99 | 660 | 122 | 0 |
| BBC | 3 (0) | 3 | 99 | 921 | 147 | 0 |
| Ikea | 4 (2) | 6 | 98 | 1276 | 162 | 0,02 |
| Indeed | 5 (2) | 7 | 98 | 1419 | 124 | 0,08 |
| Mumsnet | 6 (-1) | 5 | 98 | 1484 | 176 | 0,02 |
| Telegraph | 7 (3) | 10 | 97 | 1582 | 123 | 0,08 |
| The guardian | 8 (-4) | 4 | 97 | 893 | 127 | 0,09 |
| Temu | 9 (2) | 11 | 97 | 1554 | 177 | 0 |
| Santander | 10 (-2) | 8 | 97 | 1748 | 166 | 0,01 |
| Etsy | 11 (-2) | 9 | 97 | 2079 | 139 | 0 |
| Zoopla | 12 (0) | 12 | 97 | 1561 | 196 | 0,01 |
| National Lottery | 13 (1) | 14 | 97 | 1161 | 146 | 0,09 |
| The Sun | 14 (4) | 18 | 97 | 1635 | 191 | 0,01 |
| Asos | 15 (1) | 16 | 97 | 1777 | 192 | 0,02 |
| News.sky | 16 (-3) | 13 | 96 | 1514 | 128 | 0,1 |
| Amazon | 17 (0) | 17 | 96 | 1513 | 163 | 0,09 |
| Ebay | 18 (-3) | 15 | 96 | 1502 | 224 | 0 |
| Mark and Spencer | 19 (0) | 19 | 96 | 1872 | 211 | 0,03 |
| Independent | 20 (1) | 21 | 95 | 1259 | 232 | 0,06 |
| Ny Times | 21 (-1) | 20 | 95 | 2096 | 208 | 0,05 |
| Daily Mail | 22 (2) | 24 | 94 | 1625 | 253 | 0,02 |
| Spotify | 23 (0) | 23 | 94 | 2238 | 208 | 0,06 |
| Gumtree | 24 (-2) | 22 | 93 | 1728 | 296 | 0,03 |
| Bt | 25 (1) | 26 | 92 | 2085 | 217 | 0,09 |
| Office | 26 (5) | 31 | 90 | 2821 | 120 | 0 |
| Paypal | 27 (2) | 29 | 90 | 2775 | 173 | 0,02 |
| Disney Plus | 28 (-3) | 25 | 89 | 2921 | 197 | 0,05 |
| Right Move | 29 (-2) | 27 | 89 | 1035 | 378 | 0,07 |
| Screwfix | 30 (0) | 30 | 89 | 2248 | 310 | 0,01 |
| Express | 31 (1) | 32 | 89 | 1885 | 378 | 0,02 |
| Argos | 32 (1) | 33 | 88 | 1434 | 401 | 0,02 |
| Diy | 33 (-5) | 28 | 88 | 2089 | 335 | 0,08 |
| Booking | 34 (0) | 34 | 87 | 2465 | 316 | 0 |
| Ancestry | 35 (1) | 36 | 82 | 2860 | 170 | 0,18 |
| Tesco | 36 (2) | 38 | 81 | 2487 | 429 | 0,06 |
| Next | 37 (2) | 39 | 81 | 2158 | 545 | 0,05 |
| Just-eat | 38 (-3) | 35 | 75 | 1784 | 305 | 0,34 |
| Asda | 39 (1) | 40 | 75 | 1839 | 363 | 0,29 |
| Microsoft | 40 (2) | 42 | 74 | 2977 | 534 | 0 |
| Vinted | 41 (4) | 45 | 71 | 2600 | 257 | 0,44 |
| Sky scanner | 42 (1) | 43 | 69 | 2809 | 401 | 0,27 |
| Royal Mail | 43 (1) | 44 | 69 | 2364 | 227 | 0,9 |
| Snapchat | 44 (-3) | 41 | 68 | 3338 | 542 | 0 |
| Sky | 45 (1) | 46 | 61 | 3803 | 241 | 0,35 |
| Netflix | 46 (-9) | 37 | 59 | 3426 | 1053 | 0 |
| Bet 365 | 47 (1) | 48 | 58 | 3139 | 396 | 0,56 |
| 48 (-1) | 47 | 55 | 5105 | 389 | 0,06 | |
| Sainsburys | 49 (0) | 49 | 49 | 4059 | 434 | 0,35 |
| Boots | 50 (0) | 50 | 38 | 4648 | 461 | 0,59 |
🔎 GENERAL OBSERVATIONS
- 25% of sites analyzed still have a poor CLS, a metric that significantly impacts user experience. A high CLS can lead to frustration, as page elements shift unexpectedly during loading.
- 60% of sites don’t have a green INP, the metric that replaced FID as of 12 March 2024. INP measures the latency of all interactions throughout a webpage’s lifecycle. The highest value—or near-highest for pages with many interactions—is recorded as the INP of the page. A low INP indicates that the page is reliably responsive at all times.
- Less than half of the top 50 sites have all three Core Web Vitals in the green, underscoring the challenge of maintaining optimal web performance consistently.
Here are the e-commerce rankings, for which web performance is a business and SEO issue.
E-commerce : Webperf ranking of the top 30 most visited sites in the United Kingdom
E-commerce: Average of vital core web:
This month’s web performance ranking shows that while many e-commerce platforms maintain good LCP and CLS scores, interaction latency (INP) remains a widespread issue. Only 23% of sites have all Core Web Vitals in the green, and some INP values exceed 1100ms — a real bottleneck for conversions.
✅ 71% of e-commerce websites now have a green CLS, minimizing layout shifts during browsing.
⚠️ But only 26% have a green INP, meaning that interactions — like clicking “Add to cart” or filling a form — are still sluggish on many platforms.
🏆 TOP 3 LEADERS
John Lewis (1st, =): Maintains its lead with stable, high performance.
Ikea (2nd, +1): Reclaims second place by improving both LCP and INP.
Aldi (3rd, -1): Still strong, with a 164 ms LCP improvement.
🌟 NOTABLE PROGRESSIONS
Wickes (11th, +2): Gains from improvements in both LCP and INP.
Pretty Little Thing (15th, +2): Achieved a 223 ms drop in LCP and -51 ms on INP.
JD Sports (18th, +3): Reduced its INP by 130 ms, boosting responsiveness.
Nike (19th, +3): Made a significant 357 ms improvement in LCP and slight INP gains.
📉 CHALLENGES OBSERVED
Not all sites performed well this month:
Ebay (8th, -2): Slight performance drop in both LCP and INP.
DIY (16th, -2): INP worsened by +31 ms, LCP by +34 ms.
Halfords (20th, -2): Despite an LCP gain, its INP degraded.
Shein (24th, -5): Struggled with a +99 ms increase in INP, affecting ranking
Every millisecond of improvement or degradation can influence a site’s position in a competitive environment. In a market where user experience is directly linked to performance, maintaining optimal speed metrics is essential. These regressions remind e-commerce sites of the need for constant vigilance and optimization. To remain competitive, these sites must regularly assess and improve their web performance to avoid losing ground to competitors.
| Website | Ranking | Ranking M-1 | Score | LCP (in ms) | INP (in ms) | CLS |
| John Lewis | 1 (0) | 1 | 98 | 1304 | 155 | 0 |
| Ikea | 2 (1) | 3 | 98 | 1276 | 162 | 0,02 |
| Aldi | 3 (-1) | 2 | 98 | 1633 | 140 | 0,06 |
| Temu | 4 (0) | 4 | 97 | 1554 | 177 | 0 |
| Very | 5 (0) | 5 | 97 | 1794 | 181 | 0,02 |
| Asos | 6 (1) | 7 | 97 | 1777 | 192 | 0,02 |
| Amazon | 7 (1) | 8 | 96 | 1513 | 163 | 0,09 |
| Ebay | 8 (-2) | 6 | 96 | 1502 | 224 | 0 |
| Mark And Spencer | 9 (0) | 9 | 96 | 1872 | 211 | 0,03 |
| Sports Direct | 10 (0) | 10 | 94 | 1273 | 272 | 0,01 |
| Wickes | 11 (2) | 13 | 92 | 2031 | 262 | 0,08 |
| River Island | 12 (-1) | 11 | 92 | 1455 | 324 | 0 |
| Matalan | 13 (-1) | 12 | 89 | 1659 | 377 | 0,01 |
| Screwfix | 14 (1) | 15 | 89 | 2248 | 310 | 0,01 |
| Pretty Little Thing | 15 (2) | 17 | 88 | 2340 | 353 | 0,03 |
| DIY | 16 (-2) | 14 | 88 | 2089 | 335 | 0,08 |
| Apple | 17 (-1) | 16 | 85 | 3241 | 192 | 0,01 |
| JD Sports | 18 (3) | 21 | 84 | 1688 | 243 | 0,22 |
| Nike | 19 (3) | 22 | 84 | 2929 | 281 | 0,09 |
| Halfords | 20 (-2) | 18 | 82 | 2586 | 292 | 0,15 |
| Tesco | 21 (-1) | 20 | 81 | 2487 | 429 | 0,06 |
| Next | 22 (1) | 23 | 81 | 2158 | 545 | 0,05 |
| H&M | 23 (1) | 24 | 80 | 1349 | 312 | 0,24 |
| Shein | 24 (-5) | 19 | 77 | 2678 | 486 | 0,07 |
| Vinted | 25 (0) | 25 | 71 | 2600 | 257 | 0,44 |
| Samsung | 26 (0) | 26 | 56 | 3802 | 425 | 0,21 |
| Uber eats | 27 (0) | 27 | 53 | 4070 | 1112 | 0,03 |
| EE | 28 (0) | 28 | 45 | 4837 | 254 | 0,45 |
| Boots | 29 (0) | 29 | 38 | 4648 | 461 | 0,59 |
| Iceland | 30 (0) | 30 | 20 | 5428 | 999 | 1 |
Media : Webperf ranking of the top 20 most visited sites in the United Kingdom
Media : Average of vital core web
This month’s media rankings saw significant shifts, with changes at the podium and notable progressions across the board.
🏆 TOP 3 LEADERS
- BBC (unchanged): Continues to lead.
- Sky Sports (unchanged): Still holding strong.
- Telegraph (3rd, +2): Small LCP and INP optimizations helped it move into the top 3.
🌟 NOTABLE PROGRESSIONS
- Yahoo (6th, +2): Improved its LCP by -177ms and slightly better INP.
- The Sun (7th, +3): Gained ground by shaving -39ms off INP
- Independent (9th, +3): LCP down by -73ms.
- The Scottish Sun (12th, +2): Slight INP gain.
- Daily Mail (14th, +2): Benefited from -116ms LCP and -25ms INP improvements.
- Birmingham Live (18th, +3): Saw improvements across all metrics.
- Daily Record (19th, +9): Strong gains: -147ms INP, -128ms LCP, and CLS back in the green.
- Manchester Evening News (21st, +6): Improved across the board, CLS also passed.
- Echo (24th, +2): Both LCP and INP have been optimized.
📉 CHALLENGES OBSERVED :
Some media websites faced difficulties this month:
- Standard (10th, -6): Degraded +77ms INP and LCP decline.
- Financial Times (13th, -6): LCP up by +58ms, CLS shifted to orange.
- Hello Magazine (15th, -2): Minor degradations on both LCP and INP.
- Daily Star (20th, -2): Slight improvements, but overtaken by others.
- Express (22nd, -3): Small decline.
- Good Read (23rd, -3): No major changes, but fell due to competition.
- GB News (25th, -2): INP worsened by +55ms.
- News Now (27th, -5): INP degraded by +34ms.
- Premier League (28th, -4): Suffered from a +140ms LCP increase and +18ms INP.
| Website | Ranking | Ranking M-1 | Score | LCP (in ms) | INP (in ms) | CLS |
| BBC | 1 (0) | 1 | 99 | 921 | 147 | 0 |
| Sky Sports | 2 (0) | 2 | 99 | 1732 | 136 | 0,01 |
| Telegraph | 3 (2) | 5 | 97 | 1582 | 123 | 0,08 |
| The Guardian | 4 (-1) | 3 | 97 | 893 | 127 | 0,09 |
| Metro | 5 (1) | 6 | 97 | 1468 | 188 | 0,01 |
| Yahoo | 6 (2) | 8 | 97 | 1475 | 188 | 0,04 |
| The Sun | 7 (3) | 10 | 97 | 1635 | 191 | 0,01 |
| London South East | 8 (1) | 9 | 96 | 1841 | 196 | 0,05 |
| Independent | 9 (3) | 12 | 95 | 1259 | 232 | 0,06 |
| Standard | 10 (-6) | 4 | 95 | 1459 | 240 | 0,05 |
| Ny times | 11 (0) | 11 | 95 | 2096 | 208 | 0,05 |
| The Scottish Sun | 12 (2) | 14 | 95 | 1619 | 245 | 0,01 |
| Financial Times | 13 (-6) | 7 | 94 | 1926 | 86 | 0,12 |
| Daily Mail | 14 (2) | 16 | 94 | 1625 | 253 | 0,02 |
| Hello magazine | 15 (-2) | 13 | 94 | 1666 | 208 | 0,1 |
| Racing Post | 16 (-1) | 15 | 93 | 1852 | 212 | 0,1 |
| The times | 17 (0) | 17 | 92 | 2402 | 208 | 0,01 |
| Birmingham Live | 18 (3) | 21 | 91 | 1988 | 296 | 0,04 |
| Daily Record | 19 (9) | 28 | 91 | 2082 | 287 | 0,04 |
| Daily Star | 20 (-2) | 18 | 90 | 2254 | 287 | 0,05 |
| Manchester evening News | 21 (6) | 27 | 89 | 2328 | 301 | 0,05 |
| Express | 22 (-3) | 19 | 89 | 1885 | 378 | 0,02 |
| Good Read | 23 (-3) | 20 | 88 | 2558 | 161 | 0,12 |
| Echo | 24 (2) | 26 | 88 | 2362 | 308 | 0,03 |
| Gb News | 25 (-2) | 23 | 86 | 2475 | 356 | 0,08 |
| Sporting Life | 26 (-1) | 25 | 85 | 3102 | 272 | 0,03 |
| News Now | 27 (-5) | 22 | 84 | 2234 | 447 | 0 |
| Premier League | 28 (-4) | 24 | 83 | 3024 | 175 | 0,15 |
| Wales Online | 29 (0) | 29 | 78 | 2156 | 469 | 0,15 |
| Live Score | 30 (0) | 30 | 34 | 5409 | 637 | 0,39 |
Media websites continue to perform well on LCP and CLS with 87% and 77% of the sector meeting the thresholds, respectively.
However, the real challenge remains INP, where only 37% of media sites are in the green. This means that while pages load quickly and remain visually stable, user interactions like clicks and taps are often delayed — a critical issue for high-engagement platforms.
Only 27% of the media websites analyzed achieved all three Core Web Vitals in the green, showing that even in mature sectors, continuous optimization is essential to meet the demands of today’s users.
Finally, here are the top travel websites.
Travel : Webperf ranking of the top 20 most visited sites in the United Kingdom
Travel : Average of vital core web
🏆 TOP 3 LEADERS
- Love Holidays retains its leading position with solid metrics all around.
- Transport For London climbs to second place with a slight improvement in LCP (-43 ms).
- Pitchup slips to third but continues improving its metrics—INP and CLS are still moving in the right direction.
🌟 NOTABLE PROGRESSIONS
- Po Cruises climbs 3 positions thanks to a significant LCP gain (-246 ms) and improved INP.
- Hotels.com moves up 2 places after shaving off 166 ms from its LCP.
- Skyscanner rises 2 spots by optimizing all three metrics slightly.
- Rome 2 Rio and Parkdean Resorts both climb 1 place thanks to small but steady
📉 CHALLENGES OBSERVED
- The Trainline falls 4 places due to a sharp increase in LCP (+319 ms) and INP (+38 ms).
- Jet2 drops 2 spots with an INP regression of 90 ms.
- No change for the bottom of the list—Premier Inn and TUI continue to struggle with very high LCP and INP values.
| Love Holidays | 1 (0) | 1 | 98 | 1442 | 150 | 0 |
| Transport For London | 2 (1) | 3 | 96 | 1385 | 121 | 0,11 |
| Pitchup | 3 (-1) | 2 | 96 | 1397 | 201 | 0,07 |
| Trip Advisor | 4 (0) | 4 | 95 | 1810 | 177 | 0,08 |
| Cottages | 5 (0) | 5 | 94 | 1307 | 265 | 0,05 |
| Skyes Cottages | 6 (0) | 6 | 92 | 2414 | 180 | 0,01 |
| Ryanair | 7 (0) | 7 | 90 | 2623 | 192 | 0,1 |
| Rome 2 Rio | 8 (1) | 9 | 89 | 2768 | 240 | 0,04 |
| Trip | 9 (-1) | 8 | 89 | 2677 | 233 | 0,08 |
| Booking | 10 (0) | 10 | 87 | 2465 | 316 | 0 |
| Agoda | 11 (0) | 11 | 86 | 1127 | 413 | 0,09 |
| National Express | 12 (0) | 12 | 82 | 1669 | 327 | 0,2 |
| Vrbo | 13 (0) | 13 | 82 | 2949 | 322 | 0,08 |
| Uber | 14 (0) | 14 | 79 | 3077 | 402 | 0 |
| Airbnb | 15 (0) | 15 | 77 | 3378 | 296 | 0,11 |
| Parkdean Resorts | 16 (1) | 17 | 74 | 3451 | 334 | 0,11 |
| Hotels.com | 17 (2) | 19 | 71 | 2985 | 546 | 0,11 |
| Skyscanner | 18 (2) | 20 | 69 | 2809 | 401 | 0,27 |
| National Rail | 19 (-1) | 18 | 67 | 2347 | 443 | 0,36 |
| The Trainline | 20 (-4) | 16 | 67 | 3266 | 538 | 0,15 |
| Po Cruises | 21 (3) | 24 | 64 | 2894 | 259 | 0,8 |
| Easy Jet | 22 (-1) | 21 | 62 | 2633 | 508 | 0,35 |
| Eurostar | 23 (0) | 23 | 62 | 2373 | 677 | 0,3 |
| Jet 2 | 24 (-2) | 22 | 59 | 2836 | 663 | 0,27 |
| Premier Inn | 25 (0) | 25 | 57 | 4155 | 418 | 0,22 |
| TUI | 26 (0) | 26 | 56 | 3354 | 355 | 0,54 |
Global insights on travel Web Performance
The travel industry continues to lag behind on web performance. While 41% of travel sites meet the CLS threshold—ensuring a visually stable experience—this is where the good news ends.
Only 51% of travel websites have a green LCP, which means many pages are still taking too long to load, especially critical for users browsing destinations or finalizing bookings.
Even more concerning, just 19% meet the INP benchmark, highlighting persistent interaction delays. These lags can seriously hinder user engagement on key actions like filtering, selecting dates, or completing transactions.
🚨 Only 11% of travel sites pass all three Core Web Vitals, making this the worst-performing sector in our rankings.
💡 Takeaway: Speed still isn’t a priority in the travel sector—but it should be. With high stakes on conversion and customer satisfaction, travel platforms must prioritize LCP and INP optimizations to remain competitive.
In such a competitive market, standing out through your website’s performance is essential. Fast loading times not only improve user experience but also increase conversion rates and generate more revenue. This monthly ranking is a valuable tool to measure and enhance your site’s performance, allowing you to position yourself against competitors and identify areas for improvement.
We encourage all UK e-commerce leaders to invest in optimizing their site speed and to use tools and services like those we offer at Fasterize to stay competitive. Stay tuned for our upcoming editions to see how your site compares and what improvements can be made. For more information and to know how to improve your webperformance, visit our website.
