Israel bombed Iran's nuclear facilities in 1981.
Iran is a OPEC member, it controls some very important sea lanes, a very weak Sunak refuses to ban the Revolutionary guard, Iranian officials children go to top UK schools, London launders money for Iran, just as it did (still does) for Russia.
Where would Israel/Iran have their war? they don't share a common land border, lobbing missiles at each over sovereign airspace of other countries?
Other Arab states don't appear to have any appetite for another ME war and Syria is in the pockets of the Russians who are tied up in Ukraine.
Israel may well attack Iran (again) but what exactly can the Iranians do about it? other than through their proxies?