Yes it was Lisa Burke
Channel 5 take some, if not all of their news from Sky and their weather reports so perhaps there is a bit of crossover of presenters over Christmas and New Year cos I expect some of the presenters have swanned off on hols!
as an aside, a while ago I saw a prog about her wedding and I think it cost about the same as the GDP of a small nation so I dont feel sorry for her having to work over Christmas, but by the size of her belly she will be having a year off soon....lol