Depends, some companies responded in matter of hours, some in a couple of days. Some didn't respond at all (or they will eventually). So after that we usually s

Depends, some companies responded in matter of hours, some in a couple of days. Some didn't respond at all (or they will eventually). So after that we usually setup a quick phone chat the same or next day. And if all went well we continued from there. You really should first decide when you'll be moving. If it's in 3 months then I think it's a bit too soon to start searching. But once you do start searching things should start moving rather quickly. Just make sure you'll have the time to answer all those emails and calls :) And try to send a large batch of applications at once so you can have as many interviews at once when you'll come to London (it's not really cost effective to come just for one interview).