the grille consists of 3 parts, the actual chrome surround, the honeycomb grille, and the emblem. i guess you could technically get just the honeycomb part of the f-sport grille and customize that to fit into the chrome surround of a non-facelifted edition but there would be a lot of customizing to do. i think the dimensions are more close with the IS-F grille. Not too sure though, i'll find out soon :)
Nope not in West London, i work there :)