Road Transport (Vehicle Registration) Regulation 1998
73 Allotment of component identification numbers
(1) The Authority may allot an engine number for a vehicle part of a
registrable vehicle if:
(a) there is no component identification number on the vehicle part of
the vehicle or the component identification number of any such part appears to
have been altered, defaced, removed or obliterated, and
(b) the Authority is satisfied that such a number is necessary for the
purpose of identifying the vehicle part.
(2) The Authority may, by notice in writing, require the registered
operator of any such vehicle to have the number it has allotted to the vehicle
part concerned stamped on the part in such a position as the Authority may
specify in the notice.