Pints of Guinness in their true form (Picture: Getty Images)

The people of Ireland are in shock after a ‘criminal’ pint of Guinness was sighted in London.

A worrying trend of poor pints has led to the need for a dedicated Twitter account to highlight the capital’s worst offenders.

Pictures of a recent offering -the pub where it originated from is yet to be confirmed – has been met with waves of criticism.

‘What in Christ’s name is that,’ the furious Tweet was captioned with.

The offending photo shows foam from the Guinness pint overflowing out the glass and onto the table beneath.

Disappointing air bubbles can also be spotted within the foamy head of the pint.

Twitter user David Banks suggested the creation could be a ‘Guinness-based trifle.’

‘It’s a sample taken from the local river,’ offered Howard Hughes.

Eugene Regan added: ‘There should be an arrest warrant issued for that crime.’

Others said the head of the pint looked like a ‘crumpet’, while others likened it to having a ‘porridge’ appearance.

One weary Twitter user lamented: ‘The Brits are at it again.’

Guinness-lovers have shared their shoddy servings from pubs across the nation in recent years.

But it’s not just the black stuff that has grabbed the headlines for all the wrong reasons.

Anne-Maria Elsbury and her husband Wayne Morgan were left fuming after they forked out for nine boxes of dodgy Carlsberg, which cost £15 each from an ASDA in Bristol.

The mum-of-three found the cans were full of the brim of ‘beerwater’ and didn’t appear to have been carbonated properly.

‘It’s really stressed me out,’ she had told the Sun.

‘They might say it’s come from a bad batch but people could end up really ill from it.

‘And imagine if somebody has bought them for a wedding or a funeral – that many faulty cans could spoil the whole thing.’

Anne-Maria Elsbury was crestfallen at her Carlsberg beer (Picture: Dimitris Legakis/Athena Pictures)

The quest for the perfect pint has been well debated throughout the British Isles and Ireland.

On Tuesday, a seemingly innocent image of Rishi Sunak pulling a pint snowballed into a deepfake drama.

In the original image, a member of staff watches on as the Prime Minister has a go at pulling a pint.

But in the altered picture, the woman’s eyes were edited to create a ‘side-eye’ expression.

A generous helping of extra foam had also been digitally added to the pint glass.

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Guinness lovers, look away now.