Curious - smart uniform

[RiftGibbon]

Bit of a random one but I was in London a few days ago and whilst on the underground, a group of High School kids got on, wearing a really smart uniform. The blazer was grey, with a turquoise/blue/green piping, and a circular badge which I think was white, with a W on. They were wearing black or dark grey skirts/trousers. I was impressed by how well-behaved the kids were, and how smart their uniform was.
Would anyone know what school this might be?
I wanted to drop a line to the school to say how impressed I was by their behaviour.

I’m not sure it’s wise to tell OP which school children, perhaps a particular child, attend.

Oh yes. Good point. engages brain

Honestly, OP, it would be slightly weird to write to a school to say you were impressed by the behaviour of some teenagers on the tube. What were you expecting them to do -- have a food fight?

No idea about particular child/children and I realised once I'd posted that this sounded odd. Only that they were making sure people who could sit, did (so getting up where needed), telling others to move bags out of the way, and generally not being noisy.

Was thinking of contacting the school simply because school children using public transport/in public spaces generally get a bad rap.

Point taken though and I'll leave things alone.