If it’s lost marbles you might wish to find there’s another location – if you are brave – Silvermere Golf Complex, Redhill Road, Cobham, Surrey KT11 1EF. Barnes Wallis’s home at the time was at Effingham not far away, if I recall correctly. For many years the Silvermere Lakes were just a natural landscape feature in woodland and adjacent to his journey from home to his office at the Brooklands Works of Vickers Armstrongs a further two miles away.

The lakes also happened to be very close to Vicker’s R & D workshops that were two hangars built in the woods and known as Foxwarren. ( Their Metal Mosquito’s were bullt in there and not in Brooklands Works for example). This location in turn was nice and handy for getting aircraft built in there down to the test airfield at Wisley a couple of miles away beside the London to Guildford A3 main road.

These days its a posh building development that includes the Golf Complex. So, be brave, and duck the flying golf balls in the lake area!