Sitting room

[coccinelle]

Hi, this cropped up in one of my English (ESL) lessons today; a boy used 'sitting room' which he's learned at school. Is this still used in UK?
When I was a kid (up north, like) we had a back kitchen, a kitchen and a sitting room. As years went by the back kitchen became the kitchen , the kitchen became the living-room and the sitting room ended up being a study. This room initially was only used for visitors or to play the piano or listen to the record player. Bedrooms were only used to sleep in (they were really cold too in winter!)
So, is 'sitting room' still used nowadays? I don't want to correct him if it is stiil used.

[McMouse]

I say lounge.