Quite good, a bit whimsical, I watched it because I absolutely adore Judi Dench, a national treasure if ever there was one and Dustin Hoffman wonderful too, as he spends a lot of time in the UK, perhaps we could bestow that title on him as well.
Yes kind of agree with you Jane 10 about James Corden, some writer mooted the fact that he should also be regarded as a national treasure. As you say he is indeed very ubiquitous and I think he has a way to go before he assumes that mantle. I saw him on stage in "One Man Two Governors" a while back and although he was very good I don't think he justifies some of the accolades he receives. He still remains, in my humble opinion, a mouthy show off.
I don't feel the same about his former partner and co star, Sheridan Smith, a sublime talent and wonderful actress worthy of all the praise she receives.