there's 3 in the dover area.
Manston, Hawking, Lympne
Manston is to the north on the coast and easy to spot, it has a huge runway that is tarmac so easy to spot and long enough for even a rookie to land on
Hawkinge is just south of manston, past the port of dover, look on your map for "hawkinge" its just below that. This is a grass strip and fairly easy to spot compared to all the fields around it etc. It has 2 grass strips, one from north to south, the other west to east.
Lympne is further south of Hawkinge, and not so much on the coast but further inland. Its the same type of strip as Hawkinge. Grass etc. Fairly easy to spot once your close enough
All in all the airfields in england are easy to see. The hard ones are in russia!! stalingrad etc...a nightmare i find lol.