LONDON: British singer LILY ALLEN was reportedly spotted partying at a gig in London on the same night she cancelled a performance at a fundraising concert because of tonsillitis.

The Smile hitmaker was due to sing at Koko in the British capital on Wednesday (24Mar10) for the ICA Annual Fundraising Gala Party.

Allen cancelled her slot at the last minute, blaming illness for the no-show. British singer Ellie Goulding replaced her in the line-up.

But the 24 year old was reportedly spotted at London venue The Social on the same night watching Ian Dury's son Baxter perform, alongside her new record label partner George Tyekiff, according to Britain's The Sun.