JD Wetherspoon's chief executive and ardent Brexit supporter Tim Martin has used his company's latest trading update to launch an attack on the UK government and corporate governance rules.
Mr Martin said a no-deal Brexit would be better than the deal being proposed by Boris Johnson.
He also hit back at claims that his boardroom was too stale and needed new blood.
"I strongly believe that the UK economy will be better off on the basis of no-deal rather than the deal proposed by the Government," Mr Martin said.
On corporate governance, he added that he felt new rules limiting non-executives to nine years on boards is counter-productive.
"There can be little doubt that the current system has directly led to the failure or chronic underperformance of many businesses, including banks, supermarkets, and pubs," the CEO said.
"I believe by vesting so much power in non-executive directors (NEDs), the system is also disenfranchising executives and the workforce - the people who have real expertise and are the cornerstone of business success," he added.
Meanwhile, the pub operator posted higher first-quarter total sales, as customers spent more money at its nearly 900 pubs across Britain and Ireland.
The company, which was initially called Martin's Free House, has seen higher demand for pink gin, coffee, real ale, breakfast and beer, despite Britain witnessing a move away from drinking by millennials.
Wetherspoon, which expects full-year performance in line with its previous expectations, said total sales rose 5.6% for 13 weeks ended October 27.
Analysts said they forecast full-year like-for-like sales growth of 4.5% and pretax profit of £89m.
The company, like most UK pub and restaurant chains, has been battling increased costs due to a mandatory minimum wage hike, higher property prices and power bills.
It has also been investing in its more labour-intensive food and coffee businesses.
Britain's plan to raise the minimum wage to £10.50 an hour was endorsed by an independent review last week that found setting a floor on pay had a negligible effect on job creation.
Companies are now likely to see wage costs rise after next month's snap national election whatever the outcome, further threatening cost levels at restaurants and pubs.
But the wider British pub sector is brimming with deals, with Greene King bought out by Hong Kong's CK Asset for £4.6 billion, while Slug and Lettuce pub chain owner Stonegate agreed to buy Ei Group for £1.27 billion.
J D wetherspoon's like-for-like sales rose 5.3%, which analysts said was well ahead of the sector.
