We use harrows farm at Pottersheath. It is a secure yard with cctv. Entry restricted to 10.00 to 1100 am and 18.00 to 19.00 each day (except Wednesdays which is their day off). Entry at other times by arrangement. We haven't found this to be a problem. The entrance is quite tight but our van is 9m long. Price is reasonable but it goes up slightly every year (inflation). I hope this helps.