A man paid for an item advertised on Gumtree using counterfeit cash when he came to collect it in Reading.

He committed the fraud in Tilehurst on January 18 at around 8.15pm before it emerged the money was fake.

Police believe the same man was involved in a similar incident in Leicester.

Now Thames Valley Police are releasing CCTV images of a person they believe may have “vital information” which could assist their investigation.

Investigating officer PC Georgina Chandler, based at Newbury police station, said: “The man in these images spoke with a deep voice with a strong Leicester/Midlands accent and is believed to be in his early to mid-20s.

“I would also like to offer some advice to members of the public who sell items using cash.

“The new polymer notes in circulation can only be checked for authenticity under ultra-violet light, and the pens that people often use are not able to ascertain whether cash is genuine.

“If you have any concerns that the cash you are being offered is counterfeit, please do not accept it, unless you have been able to confirm its authenticity.

“Under a UV light, a genuine note will show a bright 5/10/20/50 in red and green on the front of the note where it says ‘Bank of England’.

“Anybody who recognises the man in these images is urged to call Thames Valley Police on 101, quoting reference number 43220025882.

“Alternatively, you can make a report online or for 100% anonymity, call the independent charity Crimestoppers on 0800 555 111.”