08705 900 200

Labour Party number?

Ta

Do you want a particular branch / location?

CLP = Constituency labour party
BLP = Branch Labour Party

A BLP is under a CLP, so the branch is part of the constituency

https://www.labour.org.uk/contactus
The Labour Party, 39 Victoria Street, London SW1H 0HA

192 for that address gives Lastminute.com , travelocity.com , (both the same phone number, for future reference 020 7802 4200)
Explains how Bush's favourite puppy can go away so often. Hopefully he's getting his flights there. Loads of other bucket holiday services. Perhaps not in Blairs taste, after all, these would be used by the people, not "the elite"
Also Leisure Cars Direct, so he can get a hire car while sunning it up whilst we're in crisis.
4 less is there also, for cheap currency on his numerous vacations.

However, this one turned up.
  Millbank Media Centre
Tel: 020 78021000
39 Victoria Street, London, Greater London SW1H 0EU

M M C is connected, as a phrase, to Labour, when googling. So I would suggest this could be it