Walter succeeded his father at the fullingmill on the Wandle; for when the lease, originally granted to John Cromwell expired in 1473, it was renewed in favor of his son Walter, who added to the business of a fuller of cloth several other kinds of business. He carried on business as a smith, armorer, a brewer and a "hostelry keeper".
In his youth, Walter was apprenticed to his maternal uncle, who was a smith and brewer at Putney, and when his apprenticeship expired, he joined his father in conducting the fulling mill on the Wandle, but did no abandon his original trade as a smith and armorer, and thus he was described in the local records as sometimes as a smith, sometimes as a fuller, and sometimes as a brewer.