Thanks to you all for the warm welcome and the lovely comments. All Z3's are special in their own ways. Mint, you are very brave to have Lotus White seats in your Z, how often do you clean them, and with what?
Bonzo - I've just had the interior refurbed. It was always Lotus White but someone (previous owner) had tried to dye the seats and it was starting to come off. I've had it done by Bespoke Leathering in Birmingham, absolutely top job, would not hesitate to recommend them
Clean with mild detergent and water, when required.