That was my thought. Room for a couple more if anyone is travelling up on the Thusday and fancies a round to break up the trip. Stoke Rochford is actually on the A1 North so will not involve any diversion. In fact the SatNav route from there to Berwick is 'Turn left on to the A1 and follow the road for 5 hours'
Had another idea for an en route game. a mate who has played there recommended Flaxby Park. It's about an hour and a half from Grantham, easy access off the A1. Being that bit further north opens it up to other travellers. It is a pretty new course with mounded fairways that add a bit of mystery. I think it has the added advantage that it takes Greenfree (and 2-for-1) - and I have one to use (I've sent an email to check with the course).
http://www.flaxbyparkgolf.com/
If you need any more 241 vouchers for the trip let me know and I will send you what you need down to you Steve.