Guerilla Pot Hole Spraying?

Problem is that in a heavy traffic area the paint will have worn off again in a week or two.

bingo, you said it all, that's the biggest problem with London is that it have a sporadic road network with lots of one-way system (bloomsbury/fitzrovia a good example).

let have an example, says New York, we all know that New York have those grid pattern road network, so if a section of road is in dire need of repair, they can easily close that section down and reroute the traffic.

London, being an old city dating back to Roman time (and further), it wasn't designed for motorised vehicle in mind, and notwithstanding the bombing of London during WW2, it still wasn't despite being rebuilt (and already been tarmac'ed), so when a section of road is in bad shape, the best they can do is try and repair the damaged as quickly as possible to avoid big traffic jam the next morning, New Oxford Street is a good example of that, it's a constantly busy road that would cause chao if it shut down to tarmac'ed the entire road.

it's not a question of the council not bothering to fill in the potholes, more of the road network in London not giving them a chance to properly fix the road before the morning come.

the same go to the NYC subway, their subway is just below the road and have another line bypassing the station, so when a station is in need of repair, the train just simply baypass it, as well as being just underneath road surface, maintenance can be done easily due to bringing equipment from above down to the station/tunnel easily and quickly.

Again due to the Underground being the oldest, as well as being a deep levels railway (minus the sub-surface line such as the Circle, District, etc.), the clue is in the name, "deep", as well not having an extra tunnel bypassing the station, it needed to be close every night to carry on maintenance work on station, tunnel, railways etc. as well as the usual daily 'fluffer', who clean the tunnel of dirt everyday (or every week, I don't remember) that get collected everyday, dust, dirt, human skin, newspaper, food, hair, liquid, etc.

Many of us take London for granted (as well as the Underground), but in reality, it's hard to keep an system that wasn't designed to cope with modern technology running well.

bugger, I end up writing an eassy and going off topic! ah fuck it (and all of it were assumption, don't take my word for it!).