If it was just a matter of no tax, you could have tried to persuade a local garage proprietor to drive it for you (for a fee, of course). Most garages have 'trade plates' which act as a form of transferable tax disk, so that they can move untaxed vehicles around.
However, nobody is allowed to drive a vehicle without an MoT (unless, of course, it's not old enough to require one), on a public road, for any other purpose than taking it to or from a pre-booked MoT test.
As Shero101 states, the only legal way to move the car is to have it conveyed on a transporter.
Chris