Fears are growing that the popular viewpoint on Epsom Downs is being taken over by "doggers" and "cruisers".

The area, which has unrivalled views of London, has previously been blighted with dogging couples and gay cruisers meeting for outdoor sex sessions.

Regular police patrols seemed to curb the activity but local people are worried it is on the rise again with frequent sightings of cars parked late at night.

The location is just metres from Epsom racecourse's Queen's Stand, used by the Queen during the Derby race meeting in June each year. The area is mentioned on national dogging websites, which give directions and specify Friday and Saturday evenings as the best days for enthusiasts to go.

Although the participants used to meet in each other's cars, the increased police presence meant people walked across the unlit Downs on to a nearby golf course to meet among the trees.

An Epsom Downs resident said it was well known what went on after dark but she sympathised with the people who wanted to use the land for genuine reasons.

She said: "I go past a lot when it's dark and I see a lot of cars there. I feel sorry for the people who go up there for a genuine reason, because they're being tainted as doggers.

"But it's always been well known as the place to go for that reason. Personally I would be wary of going up there on my own and I would never get out of my car if I did."

Epsom police Constable Will Davies said: "Police are well aware of the problem of unlawful sexual activity taking place on Epsom Downs. Regular patrols are carried out in the area and this has greatly reduced the problem.

"Surrey Police is doing as much as possible to stop men meeting on the Downs and there is no indication there has been a recent increase in these activities."