Thanks to yourself and the other contibutors.
Here is a redacted copy of what is stated in the leasehold document at the Land Registry:
<<<<Quote>>>>
REGISTER EXTRACT
Title Number : xxxxxxx
Address of Property : XXXXXXXXXXXXX, London
Price Stated : Not Available
Registered Owner(s) : [THE WIDOW AND SON - BOTH RESIDING AT THE ADDRESS]
Lender(s) : None
A: Property Register
This register describes the land and estate
comprised in the title. Except as mentioned below,
the title includes any legal easements granted by
the registered lease but is subject to any rights
that it reserves, so far as those easements and
rights exist and benefit or affect the registered
land.
[LONDON BOROUGH NAMED]
1 (XX.XX.1990) The Leasehold land shown edged with red on the plan
of the above Title filed at the Registry and being xxxxxxxxxxx, London xxxxxxxx.
NOTE 1: As to the part numbered 1 on the filed plan, only the
third floor flat is included in the title.
NOTE 2: As to the part numbered 2 on the filed plan, only the
second and third floor flat is included in the title.
2 (XX.XX.1990) Short particulars of the lease(s) (or under-lease(s))
under which the land is held:
Date : X XXXXX 1990
Term : 125 years from XX XXXXXXXX 1988
Rent : £10
Parties : (1) The Mayor and Burgesses of the London Borough of XXXXXXXXXX
(2) [HUSBAND, WIFE, AND SON]
3 (XX.XX.1990) Where relevant, the provisions contained in the
earlier documents or registers referred to in the above deed are
set out in the registers of this title.
4 (XX,XX.1990) The above mentioned Lease is made pursuant to Part V
of the Housing Act, 1985 and the land has the benefit of and is
subject to the easements and rights specified in paragraph 2 of
Schedule 6 of the said Act.
5 (XX.XX.1990) There are excepted from the effect of registration
all estates, rights, interests, powers and remedies arising upon,
or by reason of, any dealing made in breach of the prohibition or
restriction against dealings therewith inter vivos contained in
the lease.
6 Unless otherwise mentioned the title includes any legal easements
granted by the registered lease(s) but is subject to any rights
that it reserves, so far as those easements and rights exist and
benefit or affect the registered land.
7 (XX.XX.2008) The landlord's title is registered.
B: Proprietorship Register
This register specifies the class of title and
identifies the owner. It contains any entries that
affect the right of disposal.
Title absolute
1 (XX.XX.1990) PROPRIETOR: [THE WIFE AND SON].
End of register
<<<<End Quote>>>>
Hope the above makes things clearer :)