Don't dismiss new (but used) inventory as if you're happy to take a car thats a few months old and a with a few miles on it, you can often get a bit of a discount, possibly making a 100D the same price as a 75D thats without a discount and the warranty, referral etc are all the same as a new car. If you're taking finance and want to hand the car back, the future value is based on a % of the list price before discount which means the discount comes off the monthlies saving you money.
Trouble is finding them as Tesla don't real everything, look at tesla-info or ev-cpo websites as they both list UK cars.
FSD - I wouldn't bother, you will have sold the car before it appears in a meaningful way.
Referral - as others have said, I'd pick someone who's helpful or local. The rewards can take forever to arrive and someone gifting their referral is contrary to Tesla rules. The early rewards are worth a few hundred, but as you get to higher numbers they become several thousand dollars to the person referring. Both the websites above have referral codes on them, PM anyone who's helped you for there's or just do a lucky dip.
Trouble is finding them as Tesla don't real everything, look at tesla-info or ev-cpo websites as they both list UK cars.
FSD - I wouldn't bother, you will have sold the car before it appears in a meaningful way.
Referral - as others have said, I'd pick someone who's helpful or local. The rewards can take forever to arrive and someone gifting their referral is contrary to Tesla rules. The early rewards are worth a few hundred, but as you get to higher numbers they become several thousand dollars to the person referring. Both the websites above have referral codes on them, PM anyone who's helped you for there's or just do a lucky dip.