Whilst it would appear I have no 'Right to Light' in the garden. This
does however raise the issue that my dining room and kitchen which are
already poorly lit will experience a loss of light. In view of the size
of the extension I strongly believe that the kitchen area will require
almost permanent artificial light with the possible exception of the
brightest sunny days.

My suspicion however is that when the previous owners but a lean-to on
the rear of the house they intentionally obstructed the light to the
original windows, and as the new windows have not had "20 years of
uninterrupted enjoyment (of light)" they don't qualify.

The existing wall which is not a boundary wall and was built by the
previous owners of our property entirely in our property and we had to
paint this wall white in order to get sufficient light into the rear of
our property. The new wall will be 'in-keeping' with the original house
and will be a magnolia render which is unlikely to be as effective as
our original white wall.

Where does the 45 degree rule come into play here, as this extension
would clearly be within that 'zone' even from the kitchen window
furthest from the party wall.

Regards,
Trojan Hussar