Where, for the purpose of complying with any regulations made under section 63 of this Act, works are carried out by any person—
(a)for removing an advertisement which was being displayed on 1st August 1948; or
(b)for discontinuing the use for the display of advertisements of a site used for that purpose on that date,
that person shall, on a claim made to the local planning authority within the time and in the manner prescribed by regulations under this Act, be entitled to recover from that authority compensation in respect of any expenses reasonably incurred by him in that behalf.