Thanks Dan, very pleased with their work. it's a local company to me just 20 mins walk from home and they specialize in classic restorations, so this was a walk in the park for them! There were only three small and fairly unnoticeable scuffs and a big stone chip on the N/S A pillar, but you know how it is!
No, I'd say that the external plastics and rubbers are in pretty good nick and I've noticed none that are brittle or faded. It was definitely a Tokyo car which is confirmed by it's BMW service history, all services having been carried out at the Tennoushu service centre. Possibly yours was from the other end of Japan but I wouldn't think climate varies that much. It's only the wiper arms that need attention now, but they scrub up well with the occsional application of tyre and bumper gel. I really should remove and paint them .