For subsections (5) and (6) of section 159 of the 1996 Act (application of Part 6 of that Act to existing secure and introductory tenants, to existing tenants of registered social landlords and to certain other tenants) there is substituted—

“(5)

The provisions of this Part do not apply to an allocation of housing accommodation to a person who is already a secure or introductory tenant unless the allocation involves a transfer of housing accommodation for that person and is made on his application.”