Ok figured it out, anyone doing theirs here's step by step how I did it.
Disconnect battery, then electrical connections on unit being removed
Remove belt, you need a 15 or 16mm spanner for tensioner
Remove inter cooler hose to ease removal from engine bay
Loosen Allen bolt on bottom bracket, 5mm i think
Two bolts on belt side need to be removed, there is also one behind top one, 16mm socket.
To refit I removed whelarch liner, put belt on from the top and had a second pair of hands fit belt on to crank pulley while i held tensioner from above.
