help with identifying a bird

I was in my garden in Birmingham at the weekend when a wren sized bird flew out from behind some irises in my pond. It had presumably been drinking. I only momentarily saw it, but was struck by its red head stripe, which was redder than that of a robin's breast. The stripe shape was similar to that of a goldcrest (but obviously different in colour) and in contrast to the patch of a lesser redpoll.

I realise this is very limited information. I cant even be sure of the feather colour of it, other than the size and the head stripe.

Any thoughts?

thanks a lot

Neil