Thanks all - Sharps is not possible to drink and travel and of course a caravan in Regents Park is a no-no. St Albans clashes with the Greyhound (and Crawley). However I did note Bluebell Railway 21/2/3 July in the Folk Diary.

Also a Guy Davis gig: he plays a Hagstrom H-22 and I am a Hagstrom nut.