It has a rich social heritage as a pub and a real tradition as an old local boozer.
There's a bit of bad feeling that there's no hanging sign outside and some attribute that to that fact that Sir Colin was an English soldier and not hanging it is a small anti-english gesture... I'm not sure either way and haven't had chance to ask.
But I have only just stumbled on this
http://www.channel4.com/film/reviews/film.jsp?id=171139
http://www.lovefilm.com/film/County-Kilburn/126536/
http://ftvdb.bfi.org.uk/sift/title/619618
It's a film that essentially is based in and around the Campbell
The interesting thing is the extent to which the film captures the atmosphere of the Irish tradition and the way in which the High Road has moved on in the 9 years since it was filmed.
I'm enjoying the DVD and would recommend it to all those who love Kilburn... There's a good review here if you scroll down http://www.imdb.com/title/tt0258507/