Frank Herbert Muir CBE (5 February 1920 – 2 January 1998) was an English comedy writer, radio and television personality, and raconteur.

Harry Harding had died young at sea; his widow, Elizabeth Jane (née Cowie) subsequently married Frank Herbert Webber, a former lighthouse inspector and licensee of the Derby Arms Hotel and pub at Ramsgate, Kent.

[4] His aunt was Rose Muir (d. 1970), MBE; she and her brother were orphaned at a young age, and when he went to sea she had remained in New Zealand and taken a low-status position at Christchurch Hospital, serving as Matron from 1916 to 1936, and ending up as its Superintendent.

He left school prematurely aged fourteen and a half at his father's death, due to the necessity of earning an income to support the family.

His work provided the manufacturers with the information they needed to improve both the equipment and the training, which was very effective in reducing the number of failures as well as the fatality and injury rate.

He was also assigned to take pictures of the agents of the Special Operations Executive (SOE) for identity documents at the training centre at RAF Ringway.

Muir, as a photographic technician, was posted to Iceland, which was then a Danish possession under British occupation, and while there, he did some work for the forces radio station.

Also while stationed in Iceland – as he described in his memoirs A Kentish Lad – Muir suffered a medical condition which required the surgical removal of one testicle.

With Norden, in 1962, he was responsible for the television adaptation of Henry Cecil's comic novel Brothers in Law, which starred a young Richard Briers, and its spin-off Mr Justice Duncannon.

from a stage adaptation of East Lynne by Mrs Henry Wood, which became the exclamation of a youth coming out of a public telephone box which he had discovered to be out of order.

the phrases were provided by the quizmaster, but in later series Muir and Norden chose their own in advance of each programme and their stories became longer and more convoluted.

[12] Other popular advertising campaigns of the period in which Muir appeared included Batchelors' Savoury Rice ("Every grain will drive them insane!