Thankfully for us Keo, a lot of those things don't vary by that much between the regions.
Remember, you could fit the land space of England into most of the States of the US.
Good point though, I think the key ones are Property Prices (Rented or Bought) and Motor/Property Insurances
Things like Motor Fuel, Food/Groceries, Utilities and Mortgages don't really change that much at all.
Obviously the location of schools, public and private transportation networks and stores need to be considered but Kent is pretty well equiped as a whole, even in the villages nowadays.
As far as Church goes, if it's good old Christain faster, son and the holy ghost then you won't have any problem there and most other denominations are pretty well covered unless you're planning on going right out in the sticks.
Childcare is a biggy, though I seem to remember that it doesn't effect the moggy's at this time.
Mechmoggy, if you want anything specific on Kent then you might try the Kent website run by the Kent County Council
http://www.kent.gov.uk
Also, if you want anything specific, drop me a line and I'll see if I can help out.