Walch began her sporting career in 1983. In 1985, she won the Pontins (Brean Sands) Ladies tournament, was the losing finalist in the UK championship, and a semi-finalist in the world championship. She reached the world championship semi-finals again the following year.[1]
At the 1991 Home Internationals tournament, Walch and Kim Shaw, representing England, won the women's competition. Walch won all her matches, and England finished top of the table ahead of Scotland on frame difference. The other teams participating were Northern Ireland, the Republic of Ireland, Wales and the Isle of Man.[2]