Hi Simon,
The Manchester Group or North Wales are possibly the closest groups for you.
In Manchester we normally start at Marple, Macclesfield, Stalebridge or Whalley Bridge, if you contact Alan our ride secretary details on our web page
http://manchestertrf.com/contact.htmlI'm sure he will be able to arrange for a ride for you on the weekend suggested if not there will be something soon as we ride most weekends.
If you have already done a day most of our ride will be OK for you but don't worry as where there is a difficult section somebody will give you help and guidance and we always wait for anybody who is a little slower than the rest.
Peter