I have been running BD’s (street & track days) for 10+ years with a verity of different oils. Everybody has a favorite, but the most important thing is to use a quality oil of the correct weight, make sure there is enough in the sump, and change it every 3,000 miles or yearly. That said, I don’t have a catalytic converter, so I go for high zinc (ZDDP) oils. Zinc is the very best anti-wear additive. High zinc oils are not API certified (they destroy catalytic converters), so you won’t find them in your auto parts store. Don’t have any idea what may be available in the UK, but in the States, I have used oils by Joe Gibbs, Cen-pe-co, and for the past several years Brad Penn, Pen Grade 1 SAE 20W-50.