It also found a "narrowing of range" with drama and factual programming, with fewer risks taken. Innovative new programme formats were developed, said Ofcom, but the number of new titles launched each year fell.
KEY FINDINGS
In multi-channel homes, terrestrial channel audience share is 57 per cent.
Last year audience share for the main five channels among ethnic minorities was just 56 per cent.
Shows such as Horizon, Newsnight and The South Bank Show had at least 50 per cent lower viewing shares in multi-channel homes compared with terrestrial-only homes.
CHANGING CHANNELS: THE TV LOSERS
South Bank Show (ITV1) Down 65 per cent
Newsnight (BBC2) Down 59 per cent
Correspondent (BBC2) Down 51 per cent
Horizon (BBC2) Down 50 per cent
Songs Of Praise (BBC1) Down 66 per cent
The Heaven and Earth Show (BBC1) Down 73 per cent
My Favourite Hymns (ITV1) Down 76 per cent
Percentages based on decline of audience share in multi-channel homes 2002-2003