Hampstead Heath is a huge park located in North London and is one of the busiest outdoor cruising area in town (and certainly the busiest in the UK). The park is perfect for cruising with dense forest which allows some privacy. To get there, get off at Hampstead Tube Station and head north to the park. The main cruising area is located behind the Jack Straws Castle. The area is both busy during day and at dusk, and you have a great diversity of gay guys coming here, mature guys but also younger ones, joggers etc… definitely worth checking out, especially in Summer even though the cruising area remains busy all year long.