Sumptuous cabling creates a warm fabric for this classic piece of menswear with deep collar and open neck.

Additional Yarn Information
Save: Cygnet Wool Rich DK
Spend: Rowan Pure Wool DK
Spoil Yourself: Blue Sky Alpaca Sport Weight

There is an error in row 3 of the body cable chart.
st 18 should be a purl stitch (as there is a block of 6 purls that follow up the pattern) st 21 should also be a purl and the cable should be over 6 sts not 7 as per the chart.
The empty square above that cable on row four should be a purl stitch on the wrong side.