Depends where you are in the country.
Assuming your car was ordered as a sold order by your dealership then it will either go into Tyne (for dealerships in roughly the top half of the UK - including Scotland and Northern Ireland) or Sheerness (for dealerships roughly in the bottom half).
From mid-February a third delivery port is being be added at Grimsby, which will cover the middle third of the UK (including all of Wales and Northern Ireland) roughly from the M4 upwards,
Mine's heading for Bristol, and I'm in Norwich (and so is my dealer)...