2.5 litres for £13.03 including VAT in Halfords with Trade Card. Click and collect same day. Excellent foam for a very good price.

Cost me £17.50 last time.

2.5 litres should last a long time/ 14 months since last bought 2.5 litres and still have a wee bit left and that’s been used for cleaning a few cars, not just the RR

£10.99 posted for 2.5 litres on eBay.
Will report if any problems but looks good offer

Even better

Must admit I love autoglym products but think the Pilar blast is utterly rubbish. Seems to achieve nothing bThe polar wash is a little better and I tend to use that as a snow foam pre wash.the polar seal is quite canny though that's definitely a product to keep in stock

I don’t use it with a view to it self cleaning the car unless it’s just been polished and only had light use beforehand. Never expected any products to be able to do that to a high standard. So… just use it after power wash to loosen/ rinse off dirt and debris and then power wash it off before spraying it again but by a panel at a time and when the panel is foamed over, use a Meguiars wash mitt and a two bucket method to rinse the mitt. Always had good results.