That's an odd gramatical usage by Gordon Brown

The BBC report Gordon Brown as saying today:

"But on our part here was no conspiracy, no cover-up, no double dealing, no deal on oil, no attempt to instruct Scottish ministers, no private assurances by me to [Libyan leader] Colonel Gaddafi."

Am I being too suspicious as to wonder why he says there was "no conspiracy" "on our part" but "no private assurances by me"? Might that mean that private assurances were given by someone other than Gordon Brown?

This Labour government's record on careful choosing of words does make me listen very very very carefully to whatever they say. There seems to be a lawyers belief that if the right phrase is used then it is not the speaker's fault if people think he said something slightly different to what he actually said.