After reading a post from another member about the Gourmet Society, I did a bit of research and found this great deal. The Gourmet Society offers restaurant discounts at loads of restaurants in the Midlands and North East - usually 2 meals for the price of 1 or 25% of the total bill (good for groups).
Usually they charge £53.50 for a single membership or £43.50 if you join online, but I came across the promotional code 'URBAN' - if you enter this on the 'join now' page (http://www.thegourmetsociety.co.uk/individ.php) you can sign up for 12 months for £39.95 or get 3 memberships for just £79.90. Bargain! You can also join on the phone on 0800 043 1978 - just quote the same code.
You can use the card again and again throughout the year, so if you eat out even just once a month the savings could be big! I reckon you could save the membership fee in 1 or 2 visits - especially if you're eating in a group!