Small dusky-pink, black & white bird with long tail.
No interactions present.
There are many ssp. for long-tailed Tits and this is the one for the British Isles. Not that you would know that from the picture, as it is effectively indistinguishable from some of the other ssp. That's why ssp. are not usually used for birds like this, as it's only rosaceus because we are told that it is, not because we can tell from the plumage.
My Flickr photos...
I would agree that ALL of the distinguishing features of ssp rosaceus are evident from the photo and that it may be be difficult but not impossible to seperate from europaeus. Other ssps are distinctly different from rosaceus (most having less rosy tones, more black & wite) such as the purely white-headed cuadatus, the black-bibbed tephronotus
I personally would not want to be presented with a single europaeus (very variable, apparently) and a single rosaceus and asked to tell which was which!
It's not a big issue, but I think that subspecies are best left out in cases where there is such great similarity between them. Whereas, in Wagtails, say, the differences are basically clear and so subspecies are worth adding.
Lat/Lng: 52.9038, -1.2183
OS grid ref: SK526343