Just got back from ASDA there with 5 liters of EDGE 5w30 for £39. My cars due a service so what better time to do it whilst the sun is shining and weather is sweet ;-)
The 4 liter is £30 and the 1 liter is £9, managed to use my discount so a little cheaper. When I was in Halfords yesterday it was £46 for 4 liters.
This deal is both in store and online. Amazon is a little cheaper but if your after it then and there I can't see anywhere cheaper, even tried EUROCARPARTS with there discount codes and still wasn't cheaper.
There was 5w30 and 5w40 EDGE both £30 and also Castrol GTX 15w40 and 5w30 for £20