Just for interest sake looked at Europarts Oil Fully Synthetic

Triple QX SynPlus 5w40

spec API SN/CF, ACEA A3, B4, C3
VW 505.01, MB229.51, FORD M2C917A, BMW LL-04, Porsche

Currently on offer at £22 for 5ltrs less 20% and free filter thrown in - that equates to £28 for 8 ltrs and a filter. (£35.20 for 10ltrs and really should get 2 filters for this).