The upcoming audio sitcom's cast also includes Mark Benton (Early Doors), Burn Gorman (Johnny English Reborn), Tomi May (The Increasingly Poor Decisions Of Todd Margaret), Katherine Kelly (The Best Possible Taste: The Kenny Everett Story), Jennifer Saayeng and Nancy Sorrell, Reeves's wife.
Details of the plot are currently under wraps, but Pitts has described it as "a rambling shambolic tumble dryer of a 'sitcom'" on Instagram, where he posted pictures of the cast recording, apparently at the Oval cricket ground.
The abbreviation of "Detective Inspector" and Reeves, aka Jim Moir, and Pitts's propensity for dressing up flamboyantly, suggests that there may be crime and dandyish elements to the comedy.
Reeves appeared on Pitts and John Bishop's Three Little Words podcast last week, discussing how he met his comedy partner Bob Mortimer and his love of language, while Pitts has repaid the favour by recording a forthcoming episode of Reeves's podcast with Jools Holland.
Diane Morgan, Nick Helm, Alastair Roberts (Stath Lets Flats) and Vivian Oparah (Enterprice) have also joined the returning core cast, alongside creator Nick Mohammed, David Schwimmer, Sylvestra Le Touzel, Jane Stanness, Gana Bayarsaikhan, Oliver Birch, Eliot Salt and Colin Salmon.
Mohammed and Schwimmer, who play diffident computer analyst Joseph and bombastic NSA agent Jerry, will appear at an online Royal Television Society event next Thursday to discuss the second series, ahead of its broadcast on Sky One in the spring.
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