Moving to London. Bike related help and advise needed.

Locks:

Reading material:

Primary locks
Secondary locks

Get two D locks. Fuck how heavy they are, the weight is worth the cost of protecting your bike. To make you a bit scared, here: Stolen Bikes This happens daily. Prevention is better than regret.

Gearing:
Lots here ride 65gi as it is stop start in central London with more lights and crossings per mile than you will have experienced ever before.

Locking at work:
If on street, find somewhere public with a secure solid structure to lock to. Avoid that quiet little alley where someone could work unhindered for the three or four minutes it will take them to defeat your locks.

Social:
Look at compass beers and come to say hi.

Temperature:
Central London stays warm with buildings and traffic kicking out heat pollution. Staying dry matters more so think about a good waterproof for winter.

Snow:
On the two days it snows, ride in on roads with 24 hour bus routes. You will then only have to deal with light slush. All of this will be on your way in to work as due to the above pollution the snow will have gone by the time you go home. The next day any moisture on the road will have reformed into Ice, take it easy and don't lean.