Premiere Cinemas, Romford have started accepting Orange Wednesdays codes. This means you can now see 3D movies for just £2 per person (usually £4 per ticket).
Used this recently to see Iron Man in 3D. Pairs of glasses are also available for £1 per pair.
Great local deal in my opinion.
ALSO, in partnership with the local Nandos, you can now get 20% off there! (see https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-ash3/p480x480/943516_455064277907988_754336555_n.jpg). Although this seems to only be off food, they ask for ticket stub. In my case, however, we went before the movie and they only asked us to show the ticket. Could be useful to double up for a cinema/meal date.