Sch 4 para 3
Regulations may make provision as to circumstances in which— (a) a lessor is to be taken, for the purposes of section 18A 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.