That's quite a commendable and comprehensive list a there, quoted by The Hood.
Quite a number would be part of the MOT anyway, like suspension, steering, springs a dampers, gaiters, brake balance roller check, visual check of pads, etc. Even the horn.
Quite a few more that would not though, such as a wheels off brakes check.
A few others that even an owner who doesn't possess a spanner should be aware of, like lights, etc. I have no doubts though that those checks are necessary in a large proportion of cases. Bulb failure being one of the common MOT fail items, etc.
Lubrication of all locks and hinges is a very unusual item nowadays. So commendable that's included. (Especially that is very unusual at a car sales dealership as those sort of items just don't fail under warranty. Hence illustrates again that work done by independent service centres can so often be more comprehensive and more aimed at prolonging the vehicle's life expectancy than the minimum scheduled work carried out by Dealers.).
About the only thing I can't see there (but may simply have missed it?) that I would normally do myself at approx six-monthly intervals, is lubricating/treating all the door seals with stuff like either gummi pfledge or red rubber stuff. I tend to do those same times as I swap the winter/summer wheels and tyres over. Along with all the same brake and suspension checks, etc. as in the list.
Ruari - the only thing that I would want to verify in your £70 oil & filter change quote - is the brand and spec. of the oil and filter being used.
Otherwise that's a fair quote. Considering as Trilux said, that the materials cost (for top brand and spec. products), would be around £35-40. Plus a little under half an hour's labour, including several of the visual checks mentioned in the Hood's list. It still makes The Hood's "Motest" list look good value mind. Given that anything that came out of the inspections as needed (e.g. Brake Fluid refresh) would likely be charged extra?