Paragraph 4
Regulations may make provision as to circumstances in which—
(a)
a lessor is to be taken for the purposes of Article 32 and 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.