I went to Snowbee, they were kind enough to give me the repair glue stuff. I used the original soles as they hadn't worn too much at all. I then coated one side in the adhesive, leaving to set for a couple of days (to ensure they were non porous). The boot soles were rubbed down with oxide paper, then I glued and clamped the things together.
I left these clamped for 2 days and then wore them for 1/2 an hour in very straight forward conditions (a sandy bank) - they fell off again
I went to B and Q and bought a tube of Wet Grab - it really is the dogs danglies; the boots will have to fall apart before this stuff gives up - really very good and readily available

