What type of work will you be doing?If you are likely to be spending a good deal of time at client site (outside of London) then I would have thought where you actually live is much less relevant. I know partners who work in London and live in Yorkshire because where they actually base themselves doesn't matter.If you are likely to be in the office each day, then I imagine the difficulty of maintaining the commute will depend on:(a) what the standard hours in the office will be?(b) what is the commute like (e.g., can you work on the train?)If you are doing 70 hour weeks, in London and are unable to work on the commute (or have a team/company who aren't flexible enough to let you work on the commute) then I would think doing an added 2-3 hours of travel per day would be very difficult.