From knitrowan.com website:
This versatile texutred cardigan features eye-catching cables, pockets and a shawl collar. Designed by Martin Storey it is knitted in our popular Felted Tweed Aran yarn, a soft blend of 50% wool, 25% alpaca and 25% viscose.

You will also need a cable needle.

You will need 8 buttons. Rowan used #BF8147 from Groves & Banks.

Finished measurements:
Back width: 19.5(21.5, 23.5, 25.5, 27.5, 29.5)“ 50(55, 60, 65, 70, 75.5) cm
Finished length: 25.5(26.5(27, 28, 28.5, 29.5)” 65(67, 69, 71, 73, 75) cm
Sleeve length to underarm: 18.5(19.5, 20, 20.5, 21, 21)“ 47(49, 51, 52, 53, 53) cm

Yarn used:
Rowan Felted Tweed Aran
Color 777 Clay - 18(20, 22, 24, 26, 28) balls