Rear Bumper Repair

[Barkey596]

Hello all, had a very minor prang in the Allroad, yes the one with the horrible plastic front and back!

I've managed to pop out one of the rear parking sensors, not in itself a major problem (I am a mechanic, just not on cars) but annoyingly the sensor took the plastic bracket thats heat welded to the back of the bumper with it. Replacing the whole thing is a little (lot) extreme and I can't find any info on material spec for the bumper itself. Does anyone have any info on adhesives that will form a good, long term bond with these components?