I'm up for this whether Blackpool or Matlock, depending on what other people want to do.
To try and get things rolling a bit further I think we need to set a date for this meet and the weekend of the 16th of October you've suggested seems just fine. Going to Blackpool switch on sounds nice, but the problem is there's too many other things going on in September already, ie. Trax and Renault Day, so October seems better.