There are two Antonov AN-2's at White Waltham one of which was being flown on a checkout today.
I am not sure if it is available to anybody but it may be worth giving Waltham a ring to see what you can find out.
Talking to one of the ground crew today they used both fuel pumps to fill the AN-2 up at the same time and it still took 20 minutes! Apparently the rate is £500 per hour!!