Hiya guys, solved the problem with the fuel leak and it appears to be a leaky injector. I have sourced a seal kit by another forum member on Z22SE forums:

10X 93184861 817981
--KIT,RETAINER,FUEL INJECTOR,WITH SEALS (SET OF 4)Z22YH[LCH]

However
Vauxhall have said the part will not be with them until Thursday! Is there anywhere else I can get the seal kit from and does anybody know the contents of the kit??

Regards Steve - Few piccys below

2013-03-16 13.06.55.jpg
2013-03-16 13.07.05.jpg
2013-03-16 13.06.15.jpg

Im hoping the replacement kit will contain the clips in the pictures and the white plasticy seal wit hthe black rubber seal on injector end.