421Operation of partial licences

421 Operation of partial licences (1) This section applies if a licence gives a power of re-entry on a lessee assigning, subletting or doing another specified act without licence and licence is given— (a) to 1 of 2 or more lessees to assign or sublet the lessee’s share or interest or to do another act prohibited without licence; or (b) to a lessee, or 1 of 2 or more lessees, to assign or sublet part only of the property, or to do an act prohibited without licence in relation to part only of the property. (2) The licence does not extinguish the right of entry for a breach of a provision of the lease by co-lessees of the other shares or interests in the property, or by the lessee or lessees of the rest of the property, in relation to those shares or interests or the rest of the property, but the right of entry remains in force in relation to the shares, interests or property not subject to the licence. Part 4.4 Restriction of effect of licence or waiver by lessor