I've just had a "between service" oil & filter change on my 3.6 TDV8 at National Tyres & Autocare for £63.15 (inc. a 10% discount voucher available from their website). If you don't mind Fuchs oils (apparently they have swapped from Castrol because they can buy in smaller containers) then it seems good value for those of us not wanting to get our hands dirty . They may not be to everyone's liking but I was happy enough. MY 2007 3.6 TDV8 Vogue SE

I get my BMW 5 series diesel oil and filter change at national tyres. Last time was £52, using Castrol edge 5/30w fully synth. Drive in, 20 minutes later drive out ........ If i were to do it myself it'll cost me £60 in parts.