Fair point, when you come to sell it you will find its easier with the service book, - but as a guide to a good car at 18 years old it may not even be worth a fiver. I do value a bundle of receipts for a car, because they detail components and time spent at mileage points and dates.
Before I'm asked, I admit to looking for the FSH because it is a guide, and I have ring binders of "History" but it does not assure you of a good car. The receipts are a better guide which you seem to have, I reckon Service Books get falsified in many cases. An honest straight forward seller is also a good sign, and if the car drives well.
I'd check the stuff mentioned earlier, look into the sills by removing the vent grilles in the door shuts. Whats the gearchange like, door hinges like, window motors after 10 up/downs, Heater, Rear Demist, Seat adjust, Mirror adj, roof operation, Head lamp focus, Fog Lenses OK? brake feel, steering feel , full lock left/right feel OK? clutch action, gear selection, pedal rubbers look like the miles? Glove-box lid operation, Carpets dry, Panel Gaps, Dash Fit, (If its been pulled to bits by a monkey it won't be back together properly) Tool Kit / Compressor. Vac Lines, Plug Leads, Tickover 860rpm warm? Airbox condition - check the screws. Water / Oil level? Crank pressure / Cylinder Pressure readings? Oil Leaks, - take off the Tray, Wheel bearings.
George
944T