I hit a fox early one morning on the way home and as a result it managed to dislodge the lower bit of my bumper (unpainted) from the painted main front bumper.

I was able to clip the two pieces back together but noticed that the section of the clipped edge of the painted bumper had been cracked. This meant that I could put it back together but obviously wouldn't be completely secure. Thankfully the crack is not visilble on the outside as it's not split that far.

Does anyone know what type of glue could be used to effectively glue to the cracked plastics back together - with maximum strength?

Couple of coats of tiger seal,  purchase from flea bay.

Darren

is this like a black guey that goes rock hard in a short space of time?

 yes thats the one.

sound mate. I've ordered some anyway.

some fella that repaired some fairings on my old motorbike used this stuff I think, it was super strong and awesome dude.

 Sikaflex 221 or get it plastic welded