Drive as fast as possible.
As Macca said, if you can do about 120mph in the country lanes and hit 150mph on the dual carriageways, you will be fine.
I don't really see what the problem is unless the shift also happens to be during unsociable hours. 5am wake up, 6 am leave, start work at 8am, finish at 8pm, home by 10pm. If it's every day then I suggest either getting a new job, or moving closer to work, but a one off shouldn't be a problem at all. If you get a decent amount of sleep the night before I don't see why you would even be tired on the drive home.
It's 4PM till 4AM.
EDIT: I'm working for DeeSet, refitting stores, so I work where ever and whenever I have to really. Normally accommodation is paid for however with it being a one night job it isn't.
ADVICEadvise