Oh, what fun this naughty, inspiring and irreverent musical is – so much so that it had Thursday's opening night audience singing, clapping and cheering the show along in a manner more usually seen at a festival than in the confines of a Bath theatre.

Maybe they had all just returned from Glastonbury.

This show from comedian Russell Kane and with songs by Michael Bruce is no genteel country fete of blue eye shadow, day dresses and dog shows.

It's a sharp look at a potential Tesco takeover, an invasion of yuppie farmers – purveyors of a dubious yogurt made with milk from Roger the goat – and a National Farmers' Union committee that splinters over a lack of Hob Nob biscuits.

On top of this farmer Joe, played in grand bucolic style by Graham Lappin, has to face the fact that his son Julian – Gabriel Vick – is gay and wants to go and live in Brighton.

Bath-born Vick is absolutely brilliant in his multiple roles as Tesco agent and, especially, as the very camp son.

Katie Brayen is equally good singing about jam – with more than a nod to the musical Cabaret – as she is playing the village ferret boy and all three are accomplished musicians, not least during an hilarious number that celebrates immigrant Bulgarian workers in the countryside.

The show is positively joyfully anarchic and you just can't wait for Brighton really to open its first boutique dairy shop and for Julian to become the first gay milk officer in the country.

Needless to say, Tesco is sent packing in favour of jam and lots of ferrets.

Jackie Chappell