* Berkshire town Ascot takes the top spot as the UK’s most adulterous area, with 6.72% of its population currently having an affair.
* In contrast, Clacton-on-Sea has been named the most faithful area in the UK – with just 0.31% of residents straying.
* Overall, infidelity across the UK has risen by 6% since the start of 2025.
* The results come from the 2025 Infidelity Index by IllicitEncounters.com, the UK’s leading affairs site.
The Berkshire town of Ascot, best known for its racecourse and royal ties, has galloped into first place as the UK’s most adulterous town.
According to data from IllicitEncounters.com, the UK’s leading extramarital dating site, Ascot tops the list for 2025 – proving that even behind the well-kept hedges and high-end postcodes, passion often strays beyond the picket fence.
The affairs site’s annual Infidelity Index reveals a striking 6.72% of Ascot’s population engaged in affairs in 2025, making it the new adultery capital of Britain.
Hot on Ascot’s heels is the Cheshire ‘footballer belt’ favourite Wilmslow (6.23%), followed surprisingly by the Scottish Highlands town of Alness (6.01%) – showing that no corner of the UK is immune to temptation.
Other surprising hotspots include Fowey in Cornwall (5.69%) and Ludlow in Shropshire (5.51%), where the quiet countryside apparently conceals a roaring appetite for romance.
Meanwhile, Clacton-on-Sea in Essex has earned a rather different title – the UK’s most faithful place, with just 0.31% of locals admitting to an affair. It means the seaside town now has two claims to fame in 2025: not only is it home to Britain’s most loyal lovers, but it’s also represented by Nigel Farage, who was voted the UK’s sexiest politician earlier this year by members of the affairs site.
Other faithful hotspots include Harlow (0.42%), Hartlepool (0.49%), and Alloa (0.57%), with Swindon – last year’s most faithful town – still holding strong at 0.60%.
This year’s data also reveals a 6% rise in affairs across the UK since January, continuing a two-decade trend of growing extramarital activity.
Commenting on this year’s results, Jessica Leoni, sex and relationships expert for IllicitEncounters.com, said: “Affluent commuter towns like Ascot and Wilmslow are classic affair hotspots. These places are hubs for high-flying careers, long commutes, and significant stress – affairs can become a form of release or a way to reclaim your identity, so it’s no surprise these places are buzzing with passion.”
Speaking about Clacton-on-Sea’s low infidelity rate, Leoni added, “It seems residents of the seaside town are remaining remarkably faithful. Perhaps the political drama on their doorstep is providing enough excitement for everyone, leaving no reason to stray from their partners.”
Results
Most Unfaithful Towns in 2025
- Ascot, Berkshire (6.72%)
- Wilmslow, Cheshire (6.23%)
- Alness, Highlands (6.01%)
- Fowey, Cornwall (5.69%)
- Ludlow, Shropshire (5.51%)
- Framlingham, Suffolk (5.46%)
- Weybridge, Surrey (5.45%)
- Warwick, Warwickshire (5.33%)
- Caerphilly, Caerphilly (5.28%)
- Motherwell, Lanarkshire (5.11%)
Most Faithful Towns in 2025
- Clacton-on-Sea, Essex (0.31%)
- Harlow, Essex (0.42%)
- Hartlepool, County Durham (0.49%)
- Alloa, Clackmannanshire (0.57%)
- Wigan, Greater Manchester (0.58%)
- Washington, Tyne and Wear (0.58%)
- Swindon, Wiltshire (0.60%)
- Bournemouth, Dorset (0.61%)
- Gateshead, Tyne and Wear (0.62%)
- Paignton, Devon (0.63%)
