Law Firms Website Carbon, CWV & PageSpeed Table

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  • Law Firms Website Carbon, CWV & PageSpeed Table

We re-audited the UK legal sector at the end of April, and the results are a significant wake-up call. While desktop performance remains stable for many, the 85.7% failure rate in Mobile Core Web Vitals reveals a deep-seated state of technical stagnation.

Most firms are still operating on legacy, desktop-first architectures that are struggling to survive in a mobile-first indexing world. This translates to a hidden "tax" on your marketing spend and a clear competitive opening for the 5% of leaders who have already modernised.


Industry Snapshot (April 2026)

CWV Failure Rate

Mobile: 85.7%

Desktop: 66.1%


Accessibility (Perfect 100)

Mobile: 22.6%

Desktop: 23.2

Avg. Carbon (CO2e)

Mobile: 2.46g

Desktop: 2.72g


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Audited in April

Region:
  • Europe (London)

Top Law firm websites

SerialURL
01anthonygold.co.ukFailed12.912 g 26 77 79 93Very Poor
02broadfield-law.com/ukFailed19.482 g 42 85 86 79Very Poor
03brodies.comFailed8.491 g 28 85 94 93Very Poor
04bto.co.ukFailed1.419 g 54 92 95 96Very Poor
05carson-mcdowell.comFailed13.502 g 59 83 73 100Very Poor
06collyerbristow.comFailed3.347 g 53 92 93 96Very Poor
07dwfgroup.comFailed3.053 g 45 92 78 54Very Poor
08ellisons.comFailed3.252 g 52 85 80 96Very Poor
09enyolaw.comFailed5.969 g 55 92 89 100Very Poor
10flintbishop.co.ukFailed13.501 g 51 85 78 100Very Poor
11gateleyplc.comFailed1.860 g 69 100 91 100Very Poor
12gowlingwlg.com/enPassed1.037 g 51 100 93 100Very Poor
13gunnercooke.comFailed4.492 g 39 83 81 75Very Poor
14onpsolicitors.co.ukPassed3.552 g 35 100 88 100Very Poor
15parissmith.co.ukPassed0.852 g 46 85 91 96Very Poor
16seddons-gsc.comFailed0.492 g 58 100 84 100Good
17shepwedd.comPassed3.829 g 53 100 91 100Very Poor
18sintons.co.ukN/A4.133 g 55 92 89 96Very Poor
19teeslaw.comFailed2.562 g 47 100 81 100Very Poor
20ts-p.co.ukFailed11.358 g 68 100 75 100Very Poor
21twmsolicitors.comFailed0.812 g 55 92 89 96Poor
22uk.jha.comFailed1.643 g 55 92 82 100Very Poor
23vardags.comFailed2.546 g 47 100 100 93Very Poor
24wedlakebell.comFailed25.413 g 54 100 100 100Very Poor
25wslaw.co.ukFailed2.645 g 70 92 89 100Very Poor
26www.addleshawgoddard.com/enFailed21.251 g 36 77 80 75Very Poor
27www.andersonstrathern.co.ukFailed0.964 g 56 92 89 100Very Poor
28www.anthonycollins.comFailed1.905 g 60 85 85 96Very Poor
29www.aoshearman.com/enFailed0.774 g 58 92 95 96Poor
30www.araglaw.co.ukFailed2.401 g 56 100 90 96Very Poor
31www.ashtonslegal.co.ukFailed0.796 g 56 92 83 82Poor
32www.ashurst.comFailed2.748 g 34 92 89 75Very Poor
33www.bclplaw.com/en-USFailed0.981 g 59 100 95 93Very Poor
34www.bevanbrittan.comFailed2.159 g 37 83 85 96Very Poor
35www.birchallblackburn.co.ukPassed8.552 g 54 85 73 96Very Poor
36www.blakemorgan.co.ukFailed3.428 g 36 85 93 96Very Poor
37www.bondturner.comFailed0.310 g 74 100 100 100Very Good
38www.boodlehatfield.comFailed1.370 g 61 85 81 100Very Poor
39www.bottonline.co.ukFailed0.602 g 58 92 75 100Moderate
40www.brabners.comFailed2.252 g 37 92 96 96Very Poor
41www.brachers.co.ukFailed1.974 g 47 100 83 96Very Poor
42www.bristows.comPassed0.398 g 73 92 97 100Good
43www.brownejacobson.comFailed0.634 g 61 85 88 100Moderate
44www.burges-salmon.comPassed1.501 g 56 92 100 100Very Poor
45www.burnesspaull.comFailed0.325 g 69 92 89 100Very Good
46www.capsticks.comFailed1.191 g 64 75 64 82Very Poor
47www.chadwicklawrence.co.ukFailed1.311 g 62 85 84 93Very Poor
48www.charlesrussellspeechlys.com/...Failed6.588 g 69 92 86 82Very Poor
49www.chattertons.comFailed0.120 g 94 85 80 96Excellent
50www.clarionsolicitors.comFailed2.050 g 89 85 83 79Very Poor
51www.clarkewillmott.comFailed0.097 g 98 100 100 96Excellent
52www.cliffordchance.com/home.htmlFailed1.838 g 31 85 88 93Very Poor
53www.clydeco.com/enFailed2.093 g 54 92 92 96Very Poor
54www.cripps.co.ukPassed2.061 g 51 85 99 93Very Poor
55www.dacbeachcroft.comFailed4.145 g 41 75 86 96Very Poor
56www.deloitte.com/uk/en.htmlFailed0.844 g 55 77 90 82Poor
57www.devonshires.comFailed0.599 g 60 85 81 96Moderate
58www.digbybrown.co.ukFailed1.169 g 72 92 80 79Very Poor
59www.dlapiper.com/en-gbFailed1.061 g 54 77 96 96Very Poor
60www.dmhstallard.comFailed1.099 g 57 92 89 100Very Poor
61www.duncanlewis.co.ukFailed1.278 g 45 92 72 93Very Poor
62www.edwincoe.comFailed2.733 g 54 100 91 96Very Poor
63www.emwlaw.comPassed0.601 g 63 92 95 96Moderate
64www.expresssolicitors.co.ukFailed0.692 g 58 85 82 96Poor
65www.farrer.co.ukFailed0.704 g 65 92 96 100Poor
66www.fbcmb.co.ukPassed0.489 g 63 100 93 100Good
67www.fenwickelliott.comFailed1.196 g 53 85 78 75Very Poor
68www.fladgate.comFailed22.904 g 69 92 90 96Very Poor
69www.fletcherssolicitors.co.ukFailed0.679 g 55 100 93 100Poor
70www.footanstey.comPassed0.397 g 64 100 96 96Good
71www.forbessolicitors.co.ukPassed5.425 g 46 92 81 79Very Poor
72www.foxwilliams.comFailed1.816 g 55 92 93 100Very Poor
73www.freeths.co.ukFailed0.734 g 88 92 97 100Poor
74www.freshfields.comPassed0.956 g 68 92 91 96Very Poor
75www.geldards.comFailed1.448 g 59 100 80 100Very Poor
76www.gordonsols.co.ukPassed0.759 g 58 100 79 100Poor
77www.harbottle.comFailed7.271 g 83 85 79 100Very Poor
78www.harpermacleod.co.ukFailed0.747 g 67 92 95 96Poor
79www.hcrlaw.comFailed0.530 g 73 100 92 100Moderate
80www.hcrlaw.comFailed0.529 g 84 100 92 100Moderate
81www.hfw.comFailed0.485 g 66 92 100 100Good
82www.higgsllp.co.ukFailed1.150 g 64 92 91 96Very Poor
83www.hilldickinson.comFailed3.794 g 64 85 92 100Very Poor
84www.hja.netFailed1.491 g 60 85 80 100Very Poor
85www.hoganlovells.comFailed2.347 g 54 85 93 93Very Poor
86www.howardkennedy.comFailed0.808 g 76 85 97 100Poor
87www.howespercival.comFailed0.789 g 63 92 96 100Poor
88www.hughjames.comPassed2.390 g 49 100 89 96Very Poor
89www.hunterslaw.comFailed1.429 g 73 100 90 100Very Poor
90www.irwinmitchell.comFailed2.841 g 56 100 94 75Very Poor
91www.jmw.co.ukFailed1.326 g 47 92 93 100Very Poor
92www.kennedyslaw.com/enFailed6.173 g 65 92 88 96Very Poor
93www.keoghs.co.ukPassed0.448 g 83 92 70 79Good
94www.keystonelaw.comFailed3.841 g 50 92 84 100Very Poor
95www.kingsleynapley.co.ukFailed1.241 g 55 100 92 96Very Poor
96www.knightsplc.comFailed0.642 g 61 100 88 93Moderate
97www.kuits.comFailed1.784 g 51 92 80 93Very Poor
98www.lawblacks.comFailed6.783 g 42 92 77 75Very Poor
99www.lblaw.co.ukFailed1.061 g 49 85 87 93Very Poor
100www.leeandthompson.comFailed1.417 g 67 92 84 100Very Poor
101www.leighday.co.ukFailed0.608 g 61 92 93 96Moderate
102www.lesteraldridge.comFailed1.766 g 55 92 78 93Very Poor
103www.lesteraldridge.comFailed1.141 g 87 85 81 93Very Poor
104www.lewissilkin.comFailed1.915 g 46 100 91 96Very Poor
105www.lindsays.co.ukFailed0.376 g 81 92 91 96Good
106www.linklaters.comFailed0.439 g 55 85 81 93Good
107www.luptonfawcett.comFailed2.019 g 60 85 92 96Very Poor
108www.macfarlanes.comFailed1.641 g 52 85 92 96Very Poor
109www.mfmac.comFailed5.847 g 16 77 90 75Very Poor
110www.michelmores.comPassed4.001 g 55 83 80 75Very Poor
111www.mills-reeve.comFailed4.125 g 73 83 91 96Very Poor
112www.minsterlaw.co.ukFailed1.034 g 56 92 92 93Very Poor
113www.mishcon.comFailed0.280 g 72 85 91 82Very Good
114www.moorebarlow.comFailed0.740 g 60 100 83 96Poor
115www.moorebarlow.comFailed0.792 g 56 100 83 96Poor
116www.muckle-llp.comFailed0.357 g 71 100 96 100Good
117www.napthens.co.ukFailed0.465 g 68 92 87 100Good
118www.nelsonslaw.co.ukPassed0.331 g 69 85 81 96Very Good
119www.nortonrosefulbright.com/en-g...Failed2.157 g 61 75 81 93Very Poor
120www.osborneclarke.comFailed10.996 g 72 100 96 96Very Poor
121www.penningtonslaw.comPassed1.685 g 55 77 66 93Very Poor
122www.petersandpeters.comFailed1.218 g 48 85 90 100Very Poor
123www.phb.co.ukFailed0.719 g 60 100 83 96Poor
124www.pinsentmasons.comFailed0.458 g 67 92 95 100Good
125www.plexuslaw.co.ukN/A0.508 g 65 100 89 93Moderate
126www.roythorne.co.ukFailed0.143 g 96 92 85 100Excellent
127www.rpclegal.comFailed1.540 g 60 92 96 96Very Poor
128www.russell-cooke.co.ukFailed4.177 g 66 92 100 75Very Poor
129www.rwkgoodman.comFailed2.013 g 59 85 97 96Very Poor
130www.rwkgoodman.comFailed2.014 g 38 85 97 96Very Poor
131www.sackers.comFailed5.077 g 54 69 68 79Very Poor
132www.schofieldsweeney.co.ukFailed0.682 g 59 100 72 82Poor
133www.setfords.co.ukFailed0.214 g 98 92 86 96Very Good
134www.shma.co.ukFailed0.677 g 58 92 85 100Poor
135www.shoosmiths.comFailed0.650 g 65 85 79 96Moderate
136www.signaturelitigation.comFailed0.530 g 75 100 95 100Moderate
137www.sillslegal.co.ukFailed1.582 g 55 85 74 82Very Poor
138www.simmons-simmons.comFailed1.535 g 59 92 91 96Very Poor
139www.simpsonmillar.co.ukFailed0.503 g 72 85 83 93Moderate
140www.slatergordon.co.ukFailed1.399 g 63 83 93 100Very Poor
141www.slaughterandmay.comFailed1.738 g 64 92 96 100Very Poor
142www.stephensonharwood.comFailed1.347 g 33 77 74 68Very Poor
143www.stephensons.co.ukFailed0.241 g 63 92 97 100Very Good
144www.stephens-scown.co.ukFailed1.632 g 56 85 85 96Very Poor
145www.stevens-bolton.comFailed0.222 g 77 92 74 82Very Good
146www.stewartslaw.comFailed1.080 g 48 100 92 100Very Poor
147www.stowefamilylaw.co.ukFailed0.661 g 54 92 89 100Poor
148www.switalskis.comFailed1.298 g 49 92 97 100Very Poor
149www.taylorvinters.comN/A0.528 g 56 100 90 100Moderate
150www.thorntons-law.co.ukFailed0.962 g 56 92 86 96Very Poor
151www.thrings.comFailed3.362 g 52 85 87 93Very Poor
152www.tlt.comFailed2.550 g 53 83 91 93Very Poor
153www.traverssmith.comFailed0.677 g 61 92 96 82Poor
154www.trethowans.comFailed1.055 g 49 85 69 100Very Poor
155www.trowers.comFailed0.472 g 41 92 96 93Good
156www.turcanconnell.comFailed0.395 gN/A 92 100 93Good
157www.twobirds.com/enFailed2.064 g 49 85 91 93Very Poor
158www.vwv.co.ukPassed0.770 g 53 100 83 96Poor
159www.walkermorris.co.ukFailed1.137 g 56 92 98 100Very Poor
160www.wardhadaway.comFailed1.429 g 36 85 88 96Very Poor
161www.weightmans.com/media-centre/...Failed1.294 g 46 92 82 93Very Poor
162www.wfw.comFailed0.661 g 55 85 82 96Poor
163www.wiggin.co.ukFailed4.069 g 59 75 90 100Very Poor
164www.wilsonsllp.comFailed0.378 g 63 85 91 82Good
165www.winnsolicitors.comFailed5.077 g 37 85 70 79Very Poor
166www.withersworldwide.com/en-gbPassed0.979 g 71 85 93 100Very Poor
167www.wrighthassall.co.ukFailed2.276 g 63 77 88 96Very Poor
168www.wrigleys.co.ukFailed0.848 g 66 100 67 93Very Poor

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