I just called their host hotel: Delta Armouries in London and booked my reservation.
http://www.deltahotels.com/en/hotels...don-armouries/
I received the festival room rate of 89 dollars (this is a NICE hotel!) per night.
I had also joined (didn't remember that I did this!) and therefore receive FREE wireless access for the nights you stay if you
join the Delta Privilege Club prior to booking. I don't know about anyone else, but free wireless is huge for me! So, if interested, you can book for a really great hotel and join the hotel club membership first before you book.
There is no code that you can input directly into the hotel website, so I would just call the hotel directly.
I just asked for the rate for the London Lesbian Film Festival and they have a block of rooms available for the really good rate of 89.00 (tax not included) for a sweet hotel.
This is really good considering I stayed recently at a highway hotel for more than that and this is a historic hotel in the heart of downtown London!
(no, I am not affiliated with this festival!)