Another one from pet supermarket - and no I don't work for them; I just have a lot of pets and too much free time!
Got an email today with some of their special offers. At the moment they are offering 10 packs of 40 bob martin poo bags for £2.50. That's £0.25 per pack, the cheapest I've seen these.
Tesco charges £1.01 for a pack of 60 bags, Asda charge £0.63 for the 40 pack.
Delivery is £3.00 from pet supermarket, so wouldn't be worth buying just for the bags, but if you have a few pet things to get this might be useful for someone.
Don't forget Quidco or topcashback - 5%, plus free delivery over £49, £10 off orders over £79 code 'sale010', £20 off £100 code 'sale100'.