Series 1, Episode 1 · 22 April 2007
The Prodigal Returns
8.55 million viewers. The premiere opened with the largest reported audience in the run, giving ITV a strong launch for Peter Kingdom and the Market Shipborough setting.

Broadcast archive · 2007–2009
The audience story begins with an unusually strong launch, then follows three Sunday-night series through their final broadcast and later rediscovery.
Episode totals are historical consolidated figures in the guide’s audience dataset. Contemporary reports also quote overnight estimates; those are labelled separately and should not be added to consolidated totals.
The premiere on 22 April 2007 recorded an overnight audience of 8.2 million and a 34 per cent share; its consolidated figure was 8.55 million. That is the highest episode figure in this dataset. Across the six episodes, Series 1 averaged 6.59 million. The comparable averages were 5.66 million for Series 2 and 4.99 million for Series 3.
The totals describe a clear decline across the programme’s original run, but they do not by themselves explain ITV’s decision not to commission another series. ITV said it was refreshing the balance of returning and new drama. Stephen Fry’s announcement also praised the Norfolk communities, local background artists and East Anglian crew who had helped make the production. The available record supports that context, not a single hidden cause.
Contemporary discussion often placed Stephen Fry’s restrained central performance beside the programme’s Norfolk atmosphere, self-contained legal cases and family mystery. Its weekly stories could be eccentric without treating clients as jokes; Peter’s listening and tact gave the cases a gentle centre, while Simon’s disappearance and later return supplied a longer serial question. The mix could be described as comforting, but the episodes also dealt with bereavement, debt, eviction, prejudice, illness and unsettled family history.
Reception was not a single verdict. The same unhurried tone that made the programme an easy Sunday-night watch could feel unusually gentle beside more urgent crime and thriller series. The enduring interest lies in that combination: a recognisable case structure, the warmth of the Norfolk community and an ending that leaves Peter with a question the broadcast run never answers.
The first series aired from 22 April to 27 May 2007, Series 2 from 13 January to 17 February 2008, and Series 3 from 7 June to 12 July 2009. The series-one two-disc DVD was released by 2 Entertain on 28 May 2007 and included the ITV3 Behind the Scenes programme transmitted after the finale. Series 2 first appeared across six newspaper DVDs in March 2008, with a general release reported in June 2009.
Before the UK premiere, the programme had reportedly been sold to 14 networks. Later carriage included American Public Television affiliates, TVNZ, Australian broadcasters and European channels. Series 1 reached US Hulu in 2009, and all three series were historically listed by Acorn TV. Those are past records, not claims about current availability; see the dated UK viewing guide and check current listings.
On 9 October 2009 Stephen Fry announced that ITV would not commission a fourth series. The final broadcast had completed its weekly case but left Peter’s family history open. The cancellation is therefore part of the reception story and part of the way viewers remember the ending: the series concludes, while a new question about Peter’s biological father remains unanswered.