Hi Webesemps and Valleylynn,
Thank you so so much for your replies!
I didn't realise there were so many name changes. Thank you for all of the links you've provided Valleylynn, I will have a good sit down and look through them.
I'm back on the roof for another survey in February but I doubt it will be very successful as it is not exactly ideal weather to ID sedums at the moment.
Thank you again!
Fran
