IT may have been around for 43 years, but the ‘antidote to panel games’ has lost none of its potency.

The Radio 4 show is based around three veteran comedians proving every week that they can be sharper, funnier and filthier (in a Sunday lunchtime time slot) than many a comic half their age.

With free tickets to BBC recordings snapped up almost as soon as they are released, this tour offers paying audiences the chance to enjoy a ‘best of’ experience.

Graeme Garden, Tim Brooke-Taylor and Barry Cryer were joined by semi-regular Jeremy Hardy, with Sandi Toksvig in the chair.

And while many of the gags had been aired before, that was fine – because in Clue, each joke follows so hard on the heels of another that you struggle to remember it.

Among the highlights: A hilarious round of Censored Songs, with a buzzer used to make the Julie Andrews Songbook sound incredibly rude. One Song to the Tune of Another, with Tim singing the lyrics of Girlfriend in A Coma to the melody of Tiptoe Through the Tulips. And of course, there was Mornington Crescent, played by the grand masters.

The one departure from the radio format was that each theatre-goer had been issued with a kazoo, ready for a hilarious round of Swanny Kazoo involving the entire audience.

While everybody sorely misses the show’s long-time chairman Humphrey Lyttelton, Sandi Toksvig was excellent in the chair. Affecting not to understand the very heterosexual innuendo in the linking scripts, she, like Humph, was all the funnier for acting as though she wanted to be elsewhere.

Appropriately, the show began with some warm-up gags from Jon Naismith. He is the unsung hero of Clue – the producer whose 20 years with the show have confirmed it as one of radio’s all-time classics.