There's doesn't seem too be too much happening in the UK now other than the events already posted. One website which is worth taking a look at is http://special.st-andrews.ac.uk/saspecial/
which will take you to the University of St Andrews Photographic Archive. Lots of fascinating material from Sir David Brewster to Valentine and later material, too. Recommended!
Please feel free too add anything to this site that is relevent to the overall subject area of British photographic history. Remember, this isn't a one-man show - the more contributions the better and there are some very illustrious members...