I visited Sandtoft yesterday, by road but thought I would update this thread. The airfield has in recent months gained a new owner and a new airfield manager, a very can-do character in the meeting I had with him. The runway, cafe, etc. are all in nice condition. From the cafe I had a decent chilli and potato followed by an excellent slice of Bakewell, both at very reasonable prices.
Most interestingly, given the paucity of night flying destinations open after 1800L which are not large airports, I found that they do ad hoc night flying until quite late on Wednesdays and Thursdays. They said that one should call before setting off as they can only do it on 23, not 05. If they are open late they do also open the café.
Contact details are
01 427 872 034
sandtoftairfield at aol dot com
Web site is not much more than a place holder at the moment
http://www.sandtoftflyingclub.co.uk