According to my Darkness gigography on popex this was the day The Darkness played at the Uncle Bob's Wedding Reception Christmas party1...
I remember it didn't go entirely to plan, they were due to play a set of Christmas songs, but because of technical issues (or more likely because the band knew they were destined for greatness and shouldn't be pantomiming around like this) in the end it was just Justin doing a few festive numbers before their proper set.
I remember him singing a bit of "Walking In The Air", which well suits his voice...
The content here originally from my popular (in the tail end of the nineties) site popex.com. Some of this contributed by valued punters, so mainly originally created by me. I shifted this content here when popex finally closed down at the start of the noughties. Hope this ignites memories if you find it.