A BUSINESSMAN is to make a £250,000 cash offer to buy the historic CB1 number plate of the mayor of Blackburn with Darwen's official car.

Multi-millionaire Charlie Barton said he plans to make a formal offer to borough chief executive Harry Catherall for the rare registration.

The council however has said the number plate is not for sale although it would consider 'serious and substantial offers'.

Previously in 2010 when the registration plate was valued at £200,000 the council said it would not sell.

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Mr Barton said if he succeeds in buying the plate, which started on a Blackburn Council dustbin lorry in 1904, it could end up on Rolls-Royce.

The 30-year-old made an informal approach in March last year through Conservative councillor Mike Lee but his offer of £250,000 was then turned down.

As an alternative to his offer, Mr Barton said he was also prepared to arrange the filling of some of the '4,000 potholes in Blackburn, Lancashire' immortalised in the Beatles song ' Day in the Life'.

A council spokesman said the authority would consider an official request 'with an open mind'.

Cllr Andy Kay, borough resources boss, said: "The number plate is not for sale but if there was a serious and substantial offer, we would consider it.

"£250,000 is a drop in the ocean of our highways' budget let alone the overall one."

Mr Barton, who owns a caravan park and recycling businesses in Lancaster, said he was disappointed at the reaction to his first offer.

The married father-of-two said yesterday: "This number plate would be of considerable value to my family.

"I am now writing to Mr Catherall with a formal offer of £250,000 cash.

"My 69-year-old father, also called Charlie, already owns CB9 but CB1 would obviously be far better.

"We would put it on a Rolls-Royce or a Range Rover.

"There is no obvious significance to CB1 as a Blackburn with Darwen number plate and I would happily supply a suitable alternative featuring BB or BwD as a substitute on top of the money.

"Knowing of the The Beatles' '4,000 holes in Blackburn Lancashire', I did some research into the state of the roads in the borough.

"I am prepared to arrange for an asphalting firm I deal with to fill up that number of potholes to council standards as an alternative.

"This is a serious offer.

"My view is the plate is not helping anyone sitting on the mayor’s car.”

When the CB registration was allocated to Blackburn after number plates were introduced in 1904, the first 50 went to council vehicles.

CB1 was given to a dustbin lorry but in recent decades has been on the mayoral car including a BMW and the current black Audi A6.

It distinctively identifies the vehicle, as 'first citizen' Colin Rigby found last month when it was photographed on double yellow lines outside his Edgworth home.

In 2010, Cllr Rigby poured cold water on campaign group The Taxpayers' Alliance suggestion the plate, valued at £200,000, should be sold.

Yesterday, he said: "I would not have any problem with selling it if the offer was large enough.

"I agree it would have to be a serious and substantial offer as £250,000 is drop in the ocean of our highways budget."

Cllr Lee said: "I approached a senior officer on Mr Barton's behalf who took the offer to councillors. He said they declined.

"This is a difficult one and I think I would keep the plate."

In 2010, Blackburn with Darwen’s CB1 plate was valued at £200,000 with Burnley’s HG1, still on that borough's mayoral car, at £100,000.

John O'Connell, chief executive of the Taxpayers' Alliance, said: "It makes very little sense for councils to hold on to these number plate, which could be sold to help the councils' finances and ease the burden on taxpayers.

"Barely a day goes by without local authorities pleading poverty and asking hard-pressed families to dig deeper into their pockets.

"It is only fair then that councils to do everything in their power to raise money."

A Blackburn with Darwen Council spokesman said: “We have not had an official request.

"We do however keep an open mind and have previously sold an old number plate issued to the council.

“The number plate has become part of the borough’s heritage and history.

"However, if an official approach is made then we will deal with it in a fair way."