Hi Finglas
from a few miles south of you.
There are a few problems you would have to face: first, working hours. In the winter, as I'm sure you are only too aware, it doesn't get light here til after 9am, and gets dark by about 3.30. Working 9-5, if you do, means that you leave for work and get home during the hours of darkness. That makes it difficult to do anything with your chickens.
Secondly, the whole point of raising poultry for the table these days is for it to be free range and probably organic. That would be difficult to supervise, again in winter.
Third, with a flock of edible birds left alone all day, every weekday, they would easily get stolen, whether they were housed or free range. Sadly there are plenty of thieves about.
If the land you were to rent or buy was near someone who was happy to keep an eye out 'over the garden fence' on your stock, in return for free table birds perhaps, that would make it manageable.
Which brings us to another question, where would you kill and process the birds?
Different livestock could be easier to manage; for example sheep, although they need to be checked daily, are fairly self sufficient.