An unregistered vehicle may be used on a highway without having a trade plate attached to it if—
(a) the vehicle is being used—
(i) on the premises of an eligible person; or
(ii) immediately outside and within 25 metres of the perimeter of the premises of an eligible person on a highway that adjoins the premises; and
(b) at all times during the use there is a driver and no other person in the vehicle; and
(c) the vehicle is owned by the eligible person who for the time being is the assignee of a general identification mark and has been supplied with one or more trade plates under regulation 141(1); and
(d) the driver is employed by the vehicle's owner or by a person who is delivering the vehicle to the owner; and
(e) the vehicle is being moved to the owner's premises or from one part of the owner's premises to another part and is not being used for any other purpose.