If you need birthday cards go to card factory, there not as polished as hallmark cards but I have always found a nice card, they do multibuys etc so it works out quite cheaply. The staff in our local one are all lovely too.
Also our local farmfoods are doing 8pints of milk for £1.80. I havent seen it cheaper anywhere else. It's fresh not longlife.
Also I go on freestuff junction and free-stuff.co.uk and get freebies such as toothpaste, fabric softner and dishwasher tablets. They usually come with a money off voucher too. This week I got one of those dettoll soaps which automatically dispense soap into your hand free, the voucher was for £5 and it was priced at £5 in asda. Theres a lot of coffee samples at the moment on offer.
Also I have just "upgraded" my phone, so soon I will be paying £16.50 a month for 100 mins, unlimited txt and 500mb which is plenty for what I need and cheaper than the £35.00 I have been paying, I figure I dont need the latest iPhone. My old 3G one is all I need. They let me upgrade a month early so it's all money saved.
I usually lurk but I thought I'd post in case it helps anyone.