On his return to the UK, Terry started work for Decca at their cassette duplication plant in Bridgnorth, Shropshire, where he designed and serviced the huge cassette tape winding machines which were made on-site. It was during this time that Terry met Decca's production manager Doug Smith, who would later fulfill the same role as one of KLARK TEKNIK's early employees.
Phil Clarke had brought a business ides back with him from Australia, where washing cars in the street in towns had been banned, and people were required to go to garages to wash their cars using purpose-built machines that could collect and recycle the used water. Similar legislation was enacted in the UK, and so Phil asked his brother to work on making coin-operated car washing machines, for which there was a ready market.