Serviettes are serviettes in England, Kenya, Mexico, Canada, and most English-speaking countries around the world. Only Americans call them "paper napkins".
Aren't words fun?
Like 'cutlery', 'serviette' is not a word for the English gentleman, but for his servants until they know better. He would say 'knives and forks' or 'silver' and 'napkin'.
How To Get On In Society by John Betjeman
Phone for the fish knives, Norman
As cook is a little unnerved;
You kiddies have crumpled the serviettes
And I must have things daintily served.
Are the requisites all in the toilet?
The frills round the cutlets can wait
Till the girl has replenished the cruets
And switched on the logs in the grate.
It's ever so close in the lounge dear,
But the vestibule's comfy for tea
And Howard is riding on horseback
So do come and take some with me
Now here is a fork for your pastries
And do use the couch for your feet;
I know that I wanted to ask you-
Is trifle sufficient for sweet?
Milk and then just as it comes dear?
I'm afraid the preserve's full of stones;
Beg pardon, I'm soiling the doileys
With afternoon tea-cakes and scones.
