Well, there is TG Aviation, which encompasses Thanet Flying Club, Flight training, GA engineering with some hangarage. There's the cargo handlers, passenger terminal staff. There are several large airliners 747s which I believe are being dismantled. ATC staff. Bristow Helicopters are due to arrive within a couple of years to operate 2 SAR Helicopters, to be based there.
On the non flying side, there are two Museum buildings covering the RAF Manston History and one houses a Spitfire that saw wartime service and I believe has 3 kills. TB752 I think in great condition as it was refurbised to a high standard about 1980 and has been housed inside a special built building since then, and an MOD Fireman Training School.