I run the same tyres as you for 100+ miles a week london commute.

Running Conti Ultra Gatorskins (700×23) on Mavic Open Pros

I run these on my Landaan commuter and just had a Mavic Open Pro built to replace my latest taxi incident banjo’d rear wheel…

700 x 23 Spesh All Condition Armadillos Elites on Halo Track wheels.
100 miles a week and no punctures since I bought em.

Panracer Ribmos here, no problems todate.

I’d recommend a Spesh Armadillo tyre, for daily commuting in That London. There’s different widths, from 23c to fatter ones. I can’t speak for the other tyres people have suggested, but I have found Spesh’s Nimbus (think there’s a 28c version) to be extremely puncture resistant, and extremely hard wearing. Indeed, my pikey bikey has a set on that I’ve had for many years, and they’re still going strong, with only one or two punctures ever.

Correction: They’re actually the cheaper Flak Jacket versions; the Armadillos are even tougher!

As for weight; do you want to shave seconds off your PB, or do you want to get to work, when it’s pissing with rain, without having had a puncture?

I had 28c Spesh Armadillos on my old commuter and they were extremely tough tyres but I never liked the harsh ride they gave and didn’t have much confidence on them in the wet where they always felt like they were about to slide-out

Schwalbe Marathons (the regular non-plus version) seem to cope admirably with my heavily glass-strewn commute. The reflective sidewalls also seem like a genuinely good idea.

What ever you use make sure they are puncture resistant as the roads are littered with glass…

My self I have been using Bontrager race lite hard case 700 x 25.. not one puncture unlike my previous set which were nearly ever other day…

Schwalbe Stelvio 28’s for the faster bike, Marathon Supremes 35 for truly nasty stuff – more of a touring tyre though.