Robsport - Friendly advice and service plus they are 40 miles of A roads away from me. I can give the 7V8 a run out and collect my parts at the same time - a bonus. Prices competitive.
S & S - As above except they aren't a short drive from London. Shame!
Rimmers - Terrific catalogue and on line diagrams but usually more expensive. Too far away for collection. I order parts when they have one of their regular offers or no-one else has them. Otherwise fine. I did get a bit of a run around getting a refund when something arrived damaged. It wasn't intentional on their part but unlike the others where the same guy takes your order, packs it and posts it, Rimmers had several people involved. Maybe that's where they fall down sometimes as the service can't be so personal due to their size.
James Paddock - Were really helpful when I needed a complete s/h heater box and rumaged around in their stores whilst I was talking to them. It was in better nick than one I'd bought elsewhere as a recon. Haven't used them that often though.
Adam

TR7 V8 DHC Jaguar Solent Blue. 9.35cr Range Rover V8, Holley 390cfm, JWR Dual Port, 214 Cam, Lumention, Tubular Manifolds, Single Pipe Exh, 3.08 Rear, 200lb Spax & PolyBushes, Anti- Dive, Granada Vented Discs & Calipers, Braided Hoses, 4 Speed Rear Cylinders, Uprated Master Cylinder & Servo, AT 5 Spokes and Cruise Lights. No Door Stickers. Mine since July 1986, V8 from 1991