The registrar may put a director's usual residential address on the public record if—
communications sent by the registrar to the director and requiring a response within a specified period remain unanswered, or
there is evidence that service of documents at a service address provided in place of the director's usual residential address is not effective to bring them to the notice of the director.
The registrar must give notice of the proposal—
to the director, and
to every company of which the registrar has been notified that the individual is a director.
The notice must—
state the grounds on which it is proposed to put the director's usual residential address on the public record, and
specify a period within which representations may be made before that is done.
It must be sent to the director at his usual residential address, unless it appears to the registrar that service at that address may be ineffective to bring it to the individual's notice, in which case it may be sent to any service address provided in place of that address.
The registrar must take account of any representations received within the specified period.
What is meant by putting the address on the public record is explained in section 246.