Firecrest

Yes definitely!  Thought it was a Goldcrest at first until I got a really good view of the white stripe. Devilish hard to photograph though (from behind glass too) - didn't keep still for a moment.

.......and as I write this, two Jays appear in the garden on this very frosty day, just 2 days after an inch of snow fell.

2012 List

The 2012 garden list (19):

Wren
Goldcrest
Hedge Sparrow
Blue Tit
Great Tit
Long Tailed Tit
Blackbird
Robin
Greenfinch
Goldfinch
Common Gull
Herring Gull
Magpie
Jay
Great Spotted Woodpecker
Sparrowhawk
Woodpigeon
Collared Dove
Crow

Fly-bys (4):

Cormorant
Swift
Swallow
Mallard