A Hersham golf club welcomed back one of the employees who worked in the requisitioned clubhouse during World War II.

Martin Aitchison created diagrams and artwork for handbooks designed by Sir Barnes Wallis, who developed the bouncing bombs in Burhill Golf Club’s premises.

When only a few people understood Wallis’s plan of the bomb, Mr Aitchison created an artistic impression of how it would work, shedding layers as it skimmed off the heavily protected surfaces protecting Germany’s powerhouse dams in the Ruhr valley.

Mr Aitchison, 94, said: “I never felt under pressure from work, but everything we worked on was top secret. Occasionally the tea lady would take an interest in one of my drawings, so we had to make up elaborate stories about what they were for.”

He returned to the site for the BBC’s coverage of the 70th anniversary of Operation Chastise, known as the Dambusters raid.

Due to his deafness, Mr Aitchison never served in the military but worked with Wallis and 300 others at the clubhouse.

He had wanted to use his talent for drawing to become an engineer, but lacked the mathematical knowledge.

After the war ended, he became an artist, working for The Eagle comic and Ladybird books.

The club’s general manager David Cook said: “It is too easy to forget what work took place here as recently as 70 years ago, and it’s humbling to be in the presence of someone who was part of such an important and well-known operation.”