So Benhams were unwilling/unable(?) to reset it - after trying for an hour they said it would have to wait until after the trip. So Iwent to see Mikeyboy today and before I could drink a cup of tea he'd fixed it! It just needed to be plugged into the GS911 and to have the error code cleared, run in gear on the centre stand and Bob's your uncle. He has a great set up there, he's a good bloke and there are some intersting local lanes on which you can test ride!
So thanks to everyone for the help.
So thanks to everyone for the help.