What rule was this player's shot interrupted for?

[Flakeandrun]

My apologies. I should have looked him up first.

The Welsh Potting Machine

The Welsh Wizard. Kebab master. All around top bloke.

 

[DeeDeeCues]

My apologies. I should have looked him up first.

The Welsh Potting Machine

Good of you to own it. I spent about six months on the border of England and Wales. A Welshman would definitely fight you for calling him English.

If course, most Welsh will fight you because it's Tuesday, or Wednesday, or Thursday....