"We then went down into Pontin’s for the day and they were there filming and my sister and I were actually extras."

"We were used in the background for some of the shots. I remember being in the swimming pool when they filmed the scene with Olive where her swimming bottoms come off and being on the open air bus and things."

Another fond memory from the time is a party for the cast at the family home – but it was also quite a bizarre experience.

He said: "I remember a big chauffeur driven white Rolls Royce turning up. They pulled into the middle of the farmyard and the actor Reg Varney was there dressed from head to toe in a pristine white suit and white shoes. It was very strange."

And James’ mother, Sue Griffith, added: "It was a wonderful party. Everybody came over and they were a lively crowd. People had their wives, husbands and partners with them."

She still marvels at how successful On the Buses and the spin-off films were.

She said: It was an immensely popular series. I used to see from the list of where the royalties came from that it was shown all over the world."

"My mother was once on holiday in Yugoslavia and suddenly this woman came rushing up to her. Apparently, it was the number one comedy show there!"

"My mother and Reg got on enormously well. They were great friends and he really liked working with her and she enjoyed doing On the Buses and said it was great fun."

According to Sue,her mother would have been delighted that the film was being commemorated as part of the Film Trail.

She added: "Were my mother still with us she would have been there like a shot – my mother would open or close anything."