Know this could be a bit of a long shot.  Last October I was at the Southern Counties SBT Champ show and I met a man who said he ran a ringcraft/training class in waltham cross or waltham abbey for all breeds.  Am now trying to contact him, but coming up with a blank.  He said he lived in Tottenham if that helps.  Thanks.

Hi,
Don't know the guy you're on about but there are SBT ringcraft classes at
Herts SBT Ringcraft club
Hampson Park Hall,
Webb Rise,
Pin Green,
Stevenage, Herts, Thursday 8-10

and

SE Essex SBT Ringcraft Club
Steeple Veiw Memorial Hall,
Willowfield,
Laindon,
Essex, Thurs 8.15-10.15

I hope this helps