I've been involved in a fairly lively debate via email with a few Durham birders regarding a redpoll seen at Rainton Meadows over the weekend.
Here is the only photo of it:
Obviously the photo is entitled 'pale Mealy' but, there has to be the possibility of this being an Arctic Redpoll.
A combination of structure, colouration (including a lovely buff face and upperparts), next to no flank streaking, clean-looking underparts as well as big white wingbar and frosted remiges would seem to suggest it as exilipes.
Unfortunately no images are available of the rump and undertail coverts, and I don't think these features have actually been seen properly yet. I hear local birders will be trying again over the next few days in an attempt to relocate it.
EDIT: according to an observer the rump and undertail coverts look like they are streaked... interesting!