[5] In 2016 he won two more National titles, the Junior singles and Mixed fours at Leamington Spa.

[6] In December 2016 he was part of the triples team with Andy Knapper and Robert Paxton who won the gold medal at the 2016 World Outdoor Bowls Championship in Christchurch.

[11] Partnering Sam Tolchard he won the pairs silver medal, losing out to Wales in the final.

[12] In 2023, he was selected as part of the team to represent England at the 2023 World Outdoor Bowls Championship.

Walker made a sensational debut at the 2023 World Indoor Bowls Championship by winning the singles event, beating Jason Banks in the final.