http://places.jump-around.com/closest/

mine are

Titty Hill (map)
6.6 miles

Balls Cross (map)
12.9 miles

Lickfold (map)
19.6 miles

Knob Hill (map)
22.3 miles

Hooker's Farm (map)
29.7 miles

Bushy Bottom (map)
30.8 miles

Fulking Hill (map)
31.5 miles

Devil's Dyke (map)
32.2 miles

Pishill (map)
34.5 miles

Loose Bottom (map)
38.8 miles