We usually drive down early boxing day morning but do not have a car this year.
Hiring a car would be £700 (we would keep it while down there and use it to drive back up).
There aren't any trains on boxing day. There are coaches but they get us in so late it's not really worth it, not to mention being on a coach with all our stuff and the DCs for eight hours.
There is a flight in the late afternoon which would get us there for dinner time, again too much money (over the train), to be worth it.
Can anyone suggest anything?