This pattern is called Casual Jacket in The Family Knitting Book.

In The Family Knitting Book, the picture is on page 93, and instructions begin on page 92.
In the Chunky Jackets pamphlets this is pattern 2, illustrated on the front cover and on page 4, with start of instructions on page 3.

Materials
To fit Bust sizes
70/75, 80/85, 90/95, 100/105 cms
28/30, 32/34, 36/38, 40/42 ins
Finished measurement
83, 92, 100, 108 cms
33, 37, 40, 43 ins
Length to shoulder
60, 67, 68, 70 cms
23½, 26¼, 26¾, 27½ ins
Sleeve seam
45, 48, 48, 48 cms
17¾, 19, 19, 19 ins

Each pattern has a different set of recommended yarns. The following are from the Ladywood Chunky Jackets Pamphlet.

Materials
LADYWOOD Yarns
Double Double Knitting or
Pure Wool Shetland Chunky
12, 14, 16, 17 balls
10 toggles.