My local Cost-co is currently running a 20% off deal for Castrol Edge 507 spec oil - £23.99 for 4L (inc VAT). This is the cheapest I've seen for this oil.

 

Currently £46.99 in Halfords!

I priced their tyres recently, 225 40 18s were around £110 - £120 for Michelin/Bridgestone fully fitted no extra costs. They've since had an offer of £15 off per tyre.

I don't think I'll bother looking at all local deals when my tyres are due, I'll just go there.

I priced their tyres recently, 225 40 18s were around £110 - £120 for Michelin/Bridgestone fully fitted no extra costs. They've since had an offer of £15 off per tyre.

I don't think I'll bother looking at all local deals when my tyres are due, I'll just go there.

Michelin PS3 in 225/40/18 were £119 last time I was in there (last week, possibly week before).

Wait for the offer early next year - you should get 25-30% off a set and can defer fitting for 2 years.