I got a copy of the official qualifying times at the Birmingham Superprix and I put it together with some notes from Autosport and Motoring News. No official race results yet but hopefully I will get it soon.
I don't know how to use code to edit Jesper's posts but I have put up an Excel file of the 1990 BTCC details from the Superprix so perhaps someone can put up the edited details into Jesper's post of the BSP results and grid.
1990_BSP_BTCC.xls