I believe the bombs were manufactured and taken to the uk seperately from the bomb team as an added security measure. I seem to recall this had been done earlier in the 70s when the Price sisters were involved. I am not sure, but I think he late Dolours Price mentions it her interview during the recent film 'I Dolours' - its grim, but an incredible insight into theworkings of PIRA.Wasn't South Armagh involved latterly in the mainland ops? They being the only part of the Provos who had not been compromised by British intelligence at that stage. The big bombs in London in the 90s were manufactured there if I am not mistaken.