Didn't go to the christmas shows last year but saw them at Guilfest a couple of years a go.... they were absolutely fantastic. You'll have a great time!
Ive seen them about 7 or 8 times around London they were brilliant every single time except one year they did Shepherds Bush St Patricks night and Shane had done a gig earlier that day in Dublin so you can guess the rest one and half hours late couldnt stand and it wasnt good but every other time fantastic and brixton as well with christmas you will have fantastic time