There is an F4 van for sale in Nicossia absolutly solid for just 400 euros , it has the 1100 engine and has been here in the Cyprus sun for all its life so no rust maggots in it. If the price of shipping to the UK is not too much it would definitely be worth the trouble.
I looked at it before I got my R4L but I need 4 doors and it was not what I needed.