“Subject to the following provisions of this section, a person is a qualifying tenant of a flat… if he is tenant of the flat under a long lease.”
“A person can be… the qualifying tenant of each of two or more flats at the same time whether he is tenant of those flats under one lease or under two or more separate leases.”
“Any reference to the lease held by a qualifying tenant of a flat is a reference to a lease held by him under which the demised premises consist of or include the flat (whether with or without one or more other flats).”
“The new lease…” - that is to say the new lease in respect of each flat: “…to be granted to a tenant shall be a lease on the same terms as those of the existing lease as they apply on the relevant date, but with such modifications as may be required or appropriate to take account of various matters.”
“…as if there had been a surrender and re-grant of any subsisting lease intermediate between the interest of a competent landlord and the existing lease...”