You can usually find at least one in any saloon bar, ready to give you the benefit of their peppery views on the parlous state of Britain today.
This particular example is a clean shaven, middle-aged man with the de rigueur attire of carefully knotted mustard tie and blue, golf club-style blazer.
Brass cuff buttons flash as he pounds an angry fist on to his knee.
'I will give £5 to anyone in Britain who wants to live under Sharia law,' he declares. 'It will help pay for their ticket to Sudan, Yemen, Pakistan, or wherever it is customary to live under Sharia law.
'Please, please go and leave us alone. This is Britain, not 10th century Arabia!'
We are indeed sitting in a bar, on a busy main road in Oxford.
But the man before me is no stereotypical Islamophobe.
For one, he is sipping a glass of water rather than something more inflammatory.
More importantly, though by no means obviously, Dr Taj Hargey is himself an Islamic cleric; perhaps the most controversial imam in Britain today.