The victim was sent to hospital where he was treated for a severe laceration and given stitches for a head wound following the scuffle.
Along with a friend, William had been arguing with South Western Railway staff by the ticket barrier because one member was not wearing a mask.
Err, maybe you should have merely concerned yourself with those who were wearing them incorrectly?
William said: 'My friend asked one of the station staff a totally reasonable and polite question: ''are you exempt from wearing a mask''.
'She'd snapped back saying ''none of your business''.
Because it isn't. She may be exempt.
The 'Mail' has tracked down the passenger and interviewed him. He says, without any apparent trace of irony:
'This man had nothing to do with it. He decided to interfere in something that was none of his business.'
He said: 'I had a mask on and so did most of the other passengers, so I wanted to know why the same rules did not apply to station workers?'
It never occurred to you to wonder why it was 'most' of the other passengers then?
As he was speaking outside the station, Mr Adam was approached by security staff who asked him to move on. He told them: 'You people are a disgrace and as far as I'm concerned, if you're not wearing a mask, you're spreading a plague.'
At least it's not a plague of self-righteous morons, eh, William?
South Western Railway said the member of staff who was not wearing a mask had a medical exemption.
No doubt muttering under their breath: "...now sod off!"