An enjoyable homage except...
... Tom Courtenay. Just couldn't stand him as Jones. Everyone else was pretty close to the characters they were portraying but Courtenay was just his usual self.
Jones is such an iconic character and the humour came from Clive Dunn doing a 'Harbottle' and playing it 30 years older than he actually was. It could have been an opportunity for a younger actor to do the same. He just mumbled his lines and didn't suit at all in my opinion.
Otherwise, nice tribute to the original.