Thieves conned money from two Borehamwood pensioners on Saturday afternoon in separate incidents. At around 4pm a young thief knocked on a door in Oak Farm, and asked for a piece of paper to write a note on.

The woman, in her 80s, let him in, and then another thief came into the flat and stole her purse, containing credit cards and a large quantity of cash.

The first thief was around 15-years-old, 5ft 3ins tall, wore dark clothing and had short, dark hair. The second was aged around 18, wore dark clothing and was slightly taller than his partner.

The second incident took place at 6.45pm, when thieves pretended to be working for a water company to con money from an 80-year-old Aycliffe Road woman. A man rang the woman's doorbell and said he had to turn her water supply off. Minutes later another man came into the flat. While the second man distracted the pensioner, the first stole a large amount of cash and a black holdall bag. The first thief was a 17-year-old of slim build and wore dark clothing. His partner was a short man in his early 20s, of slim build and wore brown clothing.

Hertfordshire police are again warning people not to let unexpected visitors into their homes.