Not a mega bargain, however some people might be able to make use of this.
Boots (instore) have currently a promotion on some drinks - buy one, get one free.
This is applicable to Fanta / Sprite / Dr. Pepper and some other drinks.
If you buy a meal deal for £2.99, you can get 2 bottles of the above drinks instead of just one, I bought this earlier today without any problems - staff was pleasantly surprised it went through the till without any problem.
Current offer of buy 5 meals get the 6th free, will run apparantly in August as well!