Cheers again for the advice everyone. I left the cylinder and new pistons (+0.060") with the machinist today (SEP in Derbyshire...Not the one who did the orignal tight bore). It'll be honed to 0.0045"ish piston clearence, hopefully will pick it up and reassemble this weekend. Hopefully the next time these pistons will off will be when the cylinder will be lined and taken back to std bore!
I think I'll leave the old pistons in a box in the garage instead of on my wall. I don't want to be reminded of my appaulling running in procedure