This is a great thread, thanks to the hive mind, has answered a lot of questions.
As I understand it the HMRC has different requirements meaning there is a "best of both worlds" possible, with the 1 tonne plus payload that they are interested in and the sub 2040KG weight for the full speed allowance.
I'm really hoping my new order falls into the "best of both worlds" category. Would really love to maintain full speed possibilities, more than the payload really, as I'm charging mileage rather than going the BIK route, but I think the 1 tonne payload would be good for resale value possibly.
I don't know if I'm sailing dangerously close to the wind with a T32 102PS highline coming in at (2046-130=) 1916 actual unladen; with extras of a dual passenger seat, additional drivers side sliding door and a second battery, don't know if there's any way to find out.