Hamilton, 35, said: “I don’t think consumers will see that penny directly, but we’re putting an honesty box in the bar where people can help themselves to a penny after every pint they buy.

“They may feel it that way, but on a large scale it’s a very nominal effect.”

Asked for his broader thoughts on the budget, he said he thought the increase in employers’ National Insurance (NI) contributions and the increase in the minimum wage would “definitely impact small businesses”.

“A lot of bars are struggling in their current form,” he said.

“Pubs are one of the places that have been hit hardest by people’s changing drinking habits and the crisis in the cost of living.”

He said the Flying Duck was doing its best to stay afloat.

Its beers are brewed on site and it hosts live music and quiz nights to keep punters in despite a risky time for pubs.

But the beer festival from November 8-10 will raise money not for the bar but for local children’s football teams.

Free brewery tours, live music and rock ‘n’ roll bingo will be held throughout the weekend to raise funds.

In the budget, it was announced that the contribution rate paid by employers will increase from 13.8% to 15% if a worker earns over £175 from April.

The threshold at which employers will start paying tax on each employee’s salary will be reduced from £9,100 per year to £5,000.

But the Chancellor said he would increase Employer Allowance (the amount employers can claim back on their National Insurance bills) from £5,000 to £10,500.

The increase in National Insurance is expected to generate £24bn (more than half of all tax increases announced in the Budget).

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