Headcorn charges the highest prices in the UK for one of the lowest altitudes but still wont put the plane up unless it is completely full. Some staff are friendly but that's the exception, most are rude and unapproachable. There are very few jumpers going there now leaving the place almost entirely tandems.
The Caravan jump plane is very squashed and expect to get shouted at by the tandem masters everytime. Although they are usually in the wrong spot causing the problems with fun jumpers being able to get to their seat belts.
Expect to often wait 3 hours for a lift and only get a 5 min call. So don't go anywhere.
On the positive side reasonable sized packing area, car park, and canteen. The canteen in over prized and the worst tasting food and drink I have come across on a dropzone. Staff there are robotic bit like a call-centre.
The dz is very close to a train station making it easy to get to.
Conclusion - Go elsewhere if you can. If you go expect rudeness and long waits with little indication of when you will jump.