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These tables, which it is proposed to publish year by year, indicate,
so far as smoke concentration is concerned, an improvement in
the area of Wimbledon No. 4 instrument. This is in a smoke control
area, the Order upon which became operative in 1963, and the area
is adjoined on the west by smoke control areas within the Royal
Borough of Kingston-upon-Thames.
It is hoped that, as time passes, a comparison may be made with
the past year's recordings. Graphs based on records are maintained
in the Department and these are beginning to demonstrate the effect
of smoke control.
The records of sulphur dioxide concentration, however, do not
indicate quite such a marked improvement and comparisons in future
years will be the subject of further comment.
Smoke Control Areas.
During the year the Council reviewed the Smoke Control Area
programmes of the three constituent authorities and a new programme
was adopted. This provides for the division of the remainder of the
Borough into 32 areas so arranged as to allow for linking up with
those areas already covered by Smoke Control Orders.
The position on 31st December, 1965, was as follows:—

Areas Nos. 3 and 4 under survey.
The area covered by Orders either in operation, confirmed but
not operative, or awaiting confirmation is 4,355 acres. The total
number of houses involved in these areas is 22,514. Comparable
figures at the commencement of the year were 3,797 acres and 17,245
houses.
The two Smoke Control Areas under survey at the end of the
year will cover an additional 291 acres with 3,162 houses.
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