Well that's my service complete for another year. Air filter, Pollen Filter, Oil Filter, 5 litres of Fully Synthetic oil and 8 NGK plugs. Total cost, including £10 for my son-in-law's time, £55.90. Book stamped and signed, not that I will be selling her until she is well done.
Plugs were nowhere near as awkward as I imagined (standing there with my hands in my pockets, watching).