Fish.

Fish is a BBC drama series of 2000, starring Paul McGann as an idealistic lawyer who specialised in industrial tribunals. In court, he often came up against a female lawyer, played by Jemma Redgrave. Fish's wife had mysteriously disappeared, leaving him to look after his young son, and he began an affair with Redgrave. The other regular character was Trevor, an amateur philosopher who owned a mobile burger bar. Written by actor/writer Stephen Tredre, after his death the series final scripting was finished by Matthew Bardsley, resulting in only one series being made.