You Will Need

Using double knitting wool & size 11 (3mm) needles, cast on 33 (37:41)sts. Work in K1, P1 rib for 5 (5:6) cm, ending with a right side row.
Rib to end of the next row, increasing 5 sts evenly along the row 38 (42:46) sts.
Change to size 9 (3.75mm) needles & kknit in stocking stitch (K row, P row) for 4 rows.

Shape the thumb gusset
1st row: K19 (21:23), [16:18:20], make 1, K3, m1, knit to end.
2nd to 4th rows: Stocking stitch.
5th row: K19 (21:23), [16:18:20], m1, K7, m1, knit to end.
6th row: Purl.
7th row: K19 (21:23), [16:18:20], m1, K7, m1, knit to end.
8th row: Purl.
Continue to increase 2 sts on every knit row until you have 48 (52:58) sts.
Next row: Purl

Divide for thumb
Next row: K32 (34:38), [29:31:35], turn.
Next row: P13, (13:15), turn.
Working on these 13 (13:15) sts only, proceed as follows:-
For the next 10 (12:14) rows continue in stocking stitch.
Next row: K1, *knit 2 tog, repeat from * to end. You should have 7 (7:8)sts remaining. Break off wool, leaving enough to thread through the 7 (7:8) sts, & draw this thread up firmly & fasten off.
With right side facing, rejoin wool to the remaining sts & knit to end 35 (39:43) sts.
Next row: Purl.
For the next 12 (14:18) rows, work in stocking stitch.

Shaping the top
1st rw: K1* (sl.1, K1, psso, K12 (14:16), K2 tog, K1), & repeat from *. 31 (35:39) sts.
2nd row: Purl.
3rd row: K1* (sl.1, K1, psso, K10, (12:14), K2 tog, K1), repeating from *.
4th row: Purl.
Continue to decrease 4 sts in this way on every knit row until you have 19 (19:23) sts.
Next row: Purl.
Cast off.

Left Hand
Work as given for right hand above, reversing the shaping by using the figures in [ ] brackets.