Conor McGregor has hit out at Donald Trump following the President's shock tariff announcement - potentially putting and end to the duo's bizarre bromance.

Trump, who said his 'Liberation Day' announcement was a 'declaration of economic independence', has slapped a 10 per cent tariff on US imports of UK goods - and experts believe a wave of price rises will hit American consumers first, with Brits later facing similar increases.

Speaking in the White House Rose Garden, he set out sweeping trade levies hitting countries across the world, including Ireland - the home of McGregor.

As Ireland is in the European Union, they will face a 20 per cent tariff, which is double what the UK have been dealt.

McGregor, meanwhile, visited Trump as the White House last month and began donning a 'Make Ireland Great Again' cap - similar to Trump's famous red cap with the same slogan but for America.

They were all smiles then, but McGregor has now hit out at the President, which could bring and end to their relationship.

'To be charged double the United Kingdom is an abomination!' McGregor posted on X. 'If this is fully reciprocal, what on earth are we charging our brothers in the US 20 per cent for at the order of the EU.

'Although we are in the EU, Ireland must administer exemption to our siblings in the United States separate to the EU, and the favor then returned.

'Ireland will separate here and we will charge 10 per cent on Irish goods to the US and the US will charge 10 per cent to us also. Fair play. Otherwise, and maybe the caveat in all of this, we should no longer be in the EU.'

Experts have said it will be a bumpy road ahead for Brits, despite the UK appearing to come out the least scathed in Trump's announcements.

Clarissa Hahn, an economist at Oxford Economics, told the BBC that while the initial wave of price rises will hit American consumers first, UK citizens may later face similar increases.

This would be due to the potential fluctuation of the pound, and exchange rates with other currencies, which were volatile in the wake of Trump's announcements.

If prices rise, Ahmet Ihsan Kaya, principal economist at the National Institute of Economic and Social Research, told the broadcaster that this may also 'prompt workers to demand higher wages.'

She added that if the UK decided to get into a trade war with the US in response to the tariffs, consumer prices would also rise.

McGregor proudly declared that he has the 'complete backing of the entire Trump administration' in one of a flurry of social media posts after his controversial White House visit a fortnight ago.

The Irish mixed martial arts fighter was invited to the meet Trump and several members of the administration to mark St. Patrick's Day and he used his platform to fire shots at Ireland's Prime Minister.

He claimed that rampant immigration was leading to Ireland 'potentially losing its Irishness'.

In the days that followed his remarkable visit to Washington, the 36-year-old lifted the lid on his interactions, claiming to have had 'productive meetings' with senior officials.