
Anthony Earl-Williams, 59, held a Catholic mass every week at his home and Ben used to attend.
But Earl-Williams - who calls himself the Bishop of St Pancras and Penrhys - got fed-up with him being an hour late each week.
He decided the former public schoolboy needed a "proper Catholic punishment" and caned him in his bedroom - as a group of older women listened from another room.
Earl-Williams said: "Ben was infuriatingly late for mass all the time.One day I turned to the ladies and said, 'I think Ben needs a jolly good caning to teach him a lesson'. They thoroughly agreed.
"So when Ben turned up I told him so and he knew he deserved it.
"I took him to my bedroom and I gave him six of the best. Not too hard but it must have stung a little because he said 'ouch' a few times. He kept his trousers on and afterwards he apologised to everybody."
Ben, 30, is described as the student co-ordinator of Earl-Williams's Archconfraternity of Our Lady of Victories and is pictured on the group's website.
The "bishop" said Ben was fascinated by spanking - as it reminds him of corporal punishment at school.
Earl-Williams - who was exposed in 2006 after advertising for men to spank in gay contact magazines - admitted he used to hold spanking parties at his former home in North London. He said: "Those were the days but I'm too old now."
He denied claims Ben worked as a male escort for sex but did admit he accompanied older women to parties and events so they could have a "glamorous young man" on their arm.
He said: "I know he prefers older ladies, over the age of 45. They love him and he loves them."
Ben is a regular at high society bashes hosted by socialite Liz Brewer and also appeared on her Ladette to Lady show on ITV1.
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