Depending on the amount of capital you have and what type of investing you want to do in UK, you may want to consider starting here and moving when your investment income can cover your starting costs in the UK.

What will work best for you will depend on your situation and goals.  

It just depends on where you are looking and what returns you are trying to achieve. 

Dependent on if the value is there or not, of course. 

If you are looking for performing assets in these areas, you should be looking in the 30-50k range per unit depending on level of finish and upkeep.  

Depending on what kind of ROI your looking for you may want to adjust your numbers on the maintenance and delinquency slightly higher to see if it still makes sense.

Perhaps you need to find an off market deal to get something that works for you or something a little further away from the primary market. 2-4 plex prices tend to rise and fall with the residential market vs the commercial market (which depends on NOI).

As @Parker Stiles asked, it will depend on your goals.

@Jake Walroth your question is a bit vague, it depends on what type of property you were actually buying.

It all depends on your strategy and current needs.