The whole servicing issue has been brought about by people defining different procedures as servicing.
The manufacturer has a "manufacturers service", normally different from year to year to spread costs, (normally to reduce costs for lease companies) and therefore make the car more attractive to potentiol buyers.
Kwik fit type services, national chains that do a fixed price service whatever vehicle, normally priced by engine size, and non specific to the vehicle type.
Specials, these are normally done by small garages or garages trying to attract non franchise work in. Normally at a reduced cost, and again are non vehicle specific.
Old School, these are the guys who do a "proper" service, and check all brakes every service, and do an in depth check over and usually make the effort to contact dealers for advice on any extras they may need to do at certain mileages.
40 point check type services, a variation on the kwik fit type but usually carried out by main dealers on older cars.
Punter service, a complete variable, could be oil and filter or the whole works, who knows?
That is why a Full Dealer Service history is so valuable, because it is completely traceable, however there is a service that can be done for most price budgets.
NumanR