Early days, but the show seems to lack warmth. There is a sense that received stereotypes are being retailed, rather than original characters constructed from a basis of personal observation or insight. Even within the narrow field of comedies about the outdoors, Heap's character has a precedent not just, as Griff observed, in Roger Tomlin in Nuts in May, but also in Robert Daws in Arthur's Dyke, which, in Daws antagonism to Pauline Quirke, also provides a template of sorts for the relationship between Heap and Jones.
In leadership sitcoms it is necessary to provide some sense of the character's motivation, and importantly their, redeeming qualities; Mainwaring, Brittas, Brent, even Fawlty, inspired an exasperated loyalty. I am not sure we are getting that yet from Heap, or any sense that there is anything holding the group together. I suspect the concept of Jones as the cuckoo in the nest would have worked better in creating interesting conflict if the group had been more cohesive at the outset.
So far it all seems a little too broad and lacking in affection, but I might give it another week to see if it grows.