Sounds like some of you guys are pretty poorly informed.
Lulzsec didn't hack anything to do with the UK census - It was confirmed a fake from the Lulzsec twitter account. And it looks like the guy that the papers say is the "Lulzsec leader" isn't anything to do with Lulzsec.
Oh hes involved with Lulzsec, clearly not one of the "master minds" but he definitely is involved with whats going on and knows somewhat about whats going on, potentially a fair bit. I'd say hes a relatively small player tho whos more involved with running ancillary facilities such as the IRCd and potentially involved with the DDoSing tho probably not the actual cracking aspects.