Lord Peter himself would certainly have sympathised with this quote in the Times obituary:
He had, possibly, one professional regret. He once remarked: “My ambition is to become a romantic leading man (his role model was Rex Harrison) but it is hard to achieve when the public wants you to be funny all the time.”
Also on the theme of Ian Carmichael as Wimsey, who on earth is writing the Radio 7 episode summaries? Whoever it is, they are obsessed with the words "sleuth" and "probe". Take this episode of MMA: "The posh sleuth's undercover probe sees someone get a pasting meant for him"