He said 8 in Europe (including UK) in 2020 - I think there around 120 cars in the UK in total, mostly 2017-19.
If I remember correctly, the RHD production for the UK was done in batches, so all the orders were collected up, then the factory made the number of cars that were ordered, they were shipped and delivered for that year. I think the vast majority are pre-facelift (shiny beak). The first Honda UK press car was Nouvelle Blue, the current one is Thermal Orange, both of which have worn the NSX999 plate.