§ 3. Regulations may make provision as to circumstances in which—
- (a) a lessor is to be taken, for the purposes of section (Alterations to premises occupied under leases) and this Part of this Schedule to have—
- (i) withheld his consent;
- (ii) withheld his consent unreasonably;
- (iii) acted reasonably in withholding his consent;
- (b) a condition subject to which a lessor has given his consent is to be taken to be reasonable;
- (c) a condition subject to which a lessor has given his consent is to be taken to be unreasonable.