Wanted: Urgently. Spare tyre in SW London

Going on a ride first thing in the morning and I need a tyre. Local shop is a Halfords which only has gatorskins which are fine but I don't want to pay 30 quid for one when I plan to change the tyres in a month anyway.
I'm after a new or lightly used decent road tyre tonight in SW London. No zaffiros or anything shit please

Turbo cotton for free in Putney. It is well used..

Likelyhood of getting a puncture on it riding 200k tomorrow?

Or a nearly new gp4000 for 15

I punctured once on LEL. So.. it's either really reliable or it's due

Where you at? Can I come take that/see the spesh one