Thanks for all the replies, the ‘blackcircles’ price has increased by over £100, so if anyone can suggest another supplier that would be great
I replied on 16/03 suggsting Camskill & Demon Tweeks?
Camskill had them in stock, I phoned DT who didn't, but could get them in two days at a better price. I bought from DT, so the tyres do exist.
It should be easier to find them now, over the Covid lockdown, tyre production was restricted and only produced in more popular sizes, which was not our beloved 165/80/15!