BURGLARS forced their way into a house while the owners were away, and took the keys of a car which they then made off with.

The offenders broke into the Shefford house and took cash, jewellery and a set of keys to a silver Smart car.

They then drove off in the vehicle, which continues to be missing.

In the car was more than 100 Olympic stamp first day covers, which the owner had bought for his son as a momento of the games.

Dc Barry Kibble, who is investigating, said: “We know the silver Smart car has been seen driving round Shefford and may still be in the area, so if anyone has information about who stole it, please contact the police.

“Not only has this family suffered the upset of their home being broken into and their car stolen but the special collection of first day covers while not of considerable financial worth, have great sentimental value.”

The burglary happened sometime between November 1 and 2, while the Clifton Road occupants were away.

The registration of the stolen car is FD53 UVN.

Anyone with information can contact Dc Kibble, in confidence, on 01234 275212, phone the non-emergency number on 101, or text 07786 200011.

They can also contact Crimestoppers anonymously, on 0800 555 111.