The phone number for Frank's Clapham office is given as MACauley 2810. Helen Mortimer (and thus Frank)'s address in series 4 was 24 Sussex Close, Brighton (tel: 851957). Marker's Windsor premises were found at: 93 High Street, Eton, Windsor (tel: 68319 or 67818) - he lived at 3 Willow Court. The office he shared in the final series was: Ronald Gash & Associates, 22a Walton Shopping Precinct (tel: 21109). He then took over the former Apollo Aerials premises adjacent to Chertsey train station, tel: 2499, with digs in Westbury Street.