Got some spray glue (somewhere) it's just the material itself I'm unsure of. I'd like to have access if needed so don't want to cover it all in case I need to get to the screws. That leaves doing it as three seperate bits.
I've got a spare metre of worktop I could take the top off but I know they're pretty brittle & the back would be covered in wood chips so think I'll leave it for now. Will check out my local 'tat' shop on Saturday for some ideas!