According to How Many Left, there were only 298 P38 Vogue SE A models ever produced (or registered, anyway) for UK market.
In Q4 2015 there were 248 left on the road or SORN.
Haven't yet been able to dig deeper to see what the total production run was. There's not much info around the model out there on the web.
Interesting to know what I have resting in an oily misfiring puddle in the workshop anyway.