TV channel Five has suffered a ratings drop, with its share of the audience in the first five months of the year 9% down on the same period in 2005.
Matt LeBlanc's sitcom Joey failed to become a big hit for the channel
The channel has had poor ratings for the Friends spin-off Joey and has struggled to attract viewers with its own programmes.
But it has found success with imported series such as CSI and House.
The channel accounted for 5.9% of all TV viewing between January-May this year, compared with 6.5% in 2005.
Five's viewing figures started to fall in 2004 after seven years of almost uninterrupted growth.
Ratings for all terrestrial broadcasters have fallen this year, with the exception of Channel 4.
Celebrity Big Brother was a ratings success for Channel 4
BBC One's share of the audience dropped 5.3% to 22.5% in the first five months of the year, while ITV1 declined by 8.1% to 20.2%.
Channel 4 was boosted by the success of Noel Edmonds' game show Deal or No Deal and the high-profile events of Celebrity Big Brother.
The station took 10% of the audience between January-May, compared with 9.6% in the same period last year.
BBC Two gained audiences during peak viewing hours thanks to hit shows like The Apprentice and Masterchef Goes Large.
But overall its figures dropped and the channel's audience share fell slightly to 9.5%.
Viewing of channels on satellite and cable as well as on terrestrial service Freeview continues to rise and accounted for 32.1% of viewing in the first five months of the year, according to the Broadcasters' Audience Research Board (Barb).