IllicitEncounters.com's Infidelity Index estimates how many people are having an affair in your area

The Infidelity Index, compiled by IllicitEncounters.com - a dating website for married people - mapped the location data of its 1.1 million members against each town's adult population to find the most adulterous towns in the country. 

The data found Liverpool was one of the most faithful cities in the UK while the most adulterous town in the country was Royal Tunbridge Wells, Kent.

Bury is 37th in the town rankings and Bolton is 118th.

The website reckons 810 people - or 0.42 per cent of the town's population - are having an affair in Bolton and 898 - the equivalent of 1.16 per cent - in Bury. 

'Infidelity Index'

Bury: 898 people 

Bolton: 810 people 

Farnworth: 534 people 

Horwich: 473 people 

Westhoughton: 347 people 

Ramsbottom: 207 people 

Click here to find out how many people are having an affair in your area or postcode 

Christian Grant, from the site, said: "People have had affairs since the dawn of time, but the last decade in particular has seen a large spike.

"The site has grown exponentially, and it's thanks to the turbulent economy and increase in house prices that has left many people financially crippled, unable to divorce should their marriage hit the rocks.

"So, they seek the only other viable alternative that they have: an affair. It's cheaper than a divorce, and it's safer than ever before."