S aturday Night Live UK’s maiden voyage is almost complete: this Saturday, Doctor Who star Ncuti Gatwa will host the series one finale of the much-discussed spin-off of the American sketch institution. But it’s not goodbye – we already know the cast are returning in autumn for a bumper 12-week run, proof that Sky are pleased with how their pricey punt has turned out. As well they should be: predictions that SNL UK would be a national embarrassment have been categorically rubbished. It hasn’t all worked. The opening monologues, in which celebrity guest hosts veer between gushing praise for the show and an eye-watering celebration of their own CVs, remain irredeemably American. And while the team have valiantly attempted to parody our current prime minister, mining comedic gold from Keir Starmer does seem to be an impossible task. As for the skits, there have – as with every single sketch show in history – been misses.…