CRIME gangs could target Glasgow in a bid to nick cash from shops with an Oliver Twist-style con.

It is feared city retailers, pubs, and clubs could be targeted by the fast-talking con men.

Police are warning shop and bar staff not to get fleeced in the so-called "Ringing the Changes" fraud.

Unsuspecting workers are duped in handing over extra cash by fraudsters who intend to cause cofusion by using distraction techniques.

The scam usually involves someone asking for a sum of cash to be changed into notes, of a smaller denomination.

While doing this, they deliberately confuse staff so as to obtain more money than they originally handed over.

One insider said: "It's an old scam that was around in the "Oliver Twist" days.

"But some people are still very trusting, that does not change, and criminals look to exploit that."

Police insist they are not aware of the scam taking place in to Glasgow city centre.

But officers are urging staff to be vigilant when they handle currency.

A police spokesman said: "Please be wary of the 'Ringing the Changes' fraud."

Police said the scam has been reported across Scotland, including at post offices and travel agents.

One recent incident saw two men try to change a large sum of Euros - which was made up of 50 notes and 20 notes - into pounds.

The pair went on to change their requests several times, between euros and sterling, resulting in the sum of money being returned through the counter.

At end of the transaction, the men left the currency exchange having gained a three-figure sum of cash.

A Police Scotland statement read: "This type of fraud is commonly referred to as "Ringing the Changes" and involves someone asking for a sum of cash to be changed into notes of a smaller denomination.

"While doing this they deliberately confuse staff so as to obtain more money than they originally handed over.

"Police would also advise other businesses to remain vigilant to any suspicious behaviour and to report any potential attempts of fraud immediately to police on 101."

Experts also urged businesses to ask for ID when asked to change large amounts of money.