Nayland is a good location to try out your steep airfield landings but do chat to the owner first, and ideally go in first time with someone who knows how to do it there
Unfortunately some in the past have not had a great experience ;-(
It's a wonderful setting with stunning views out across 'Constable Country' - the Stour river valley. It has a friendly owner and a clubhouse for the many light aircraft based there - and visitors. It is located around 8 miles North of Colchester just over into the county of Suffolk. The River Stour forms the Essex / Suffolk border but passports are not required.
An interesting youtube video posted by Matt Covey is here
You basically land on a Northerly heading in a steep uphill crease between two slopes that also rise up steeply on either side, there's a short flatiish section just beyond the Southern boundary tree line and HV Power cables at the threshold, and you then need lots of power to climb the remainder of the hill. Departures are to the South and start with a flattish section sheltered behind some 'farm buildings' but the runway then drops away steeply downhill. The bottom of the runway is around 100ft below the top !
My first flying visit there many years ago in a delightful Emeraude required a take off roll from the Northern hedgeline, over the lip of the hill, down half of the slope, before lifting away over the river valley and the rising valley slope towards Colchester. Quite a challenging and interesting place to visit :-0. The guys based there make it look so easy
Crosswinds and tailwinds can also be demanding.
A road visit first is a very good plan