In the Grimsby Tesco Store they have Trident Fresh Chewing Gum for just 24p.
Think they have 2 flavours coool lemon & aahh spearmint
I also got a voucher from tesco where I got a buy one get one free. Once scanned through the till it took 49p off !! Giving me a 1p profit when I bought 2 packs !!!