After he retired from the sport, Walker took up rabbit and chinchilla farming with Lady Ripley for a while, and even designed a type of cattle grid, but both ventures came to nothing.
Despois da súa retirada do deporte, Walker adicouse a cría de coellos e chinchilas con Lady Ripley por un tempo e ata deseñou un tipo de paso canadense para o gando, pero ambas empresas non chegaron a nada.