Where would be the local A&E in Bury?
It could fit the timing if Corrie started walking home, got hit by a car, driver puts him in the car and starts heading back to BSE for the hospital, but Corrie expires and instead the driver keeps driving in the direction of Mildenhall with the aim of clearing their head and coming to a decision, but as they get to Barton Mills they decide on a forest burial and driving away as if nothing happened. It would explain the 'missing hour' between 3.24 in the horseshoe and the phone not being picked up on the BM mast until around 4.30. It doesn't explain how Corrie gets out of the horseshoe, but maybe there is enough breakage in the CCTV footage somewhere or Corrie does manage to disappear behind a van and get missed by a camera?