The BBC today revealed the figures, based on BARB, along with details of its spending on each of its channels in its annual report for 2005/6.
The BBC's two flagship channels lost audience share while its digital extensions such as BBC Three either slightly grew or maintained share.
BBC One was down in all homes, from 24.4% to 22.9%, and in multichannel homes, from 19.7% to 19.2%. Expenditure on the channel was £840.4m, £32.5m less than last year.
Its decline outpaced commercial flagship ITV, which is down in all homes from 22.2% to 21.1%, and down in multichannel homes from 18.5% to 18.2%.
BBC Two was down in all homes, from 9.6% to 9.4%, but up in multichannel homes from 6.7% to 7%. Expenditure was almost unchanged, at £374.1m this year and £374.5m last year.
By comparison Channel 4 was steady in all homes at 9.8% and up in multichannel homes, from 7.6% to 8.1%.
BBC Three was up in all homes, from 0.5% to 0.6%, and up in multichannel homes from 0.8% to 0.9%. Expenditure was £92.9, exactly the same as last year.
BBC Four was static, at 0.2% in all homes and 0.3% in multichannel homes. Its budget was upped to £46.9m from £41.1m last year.
Cbeebies was up in all homes, from 0.8% to 0.9%, and unchanged in multichannel homes at 1.3%. CBBC was up in all homes from 0.3% to 0.4% and up in multichannel homes from 0.5% to 0.6%. Their combined expenditure was up to £63.2m from £49.7m.
There was no change in BBC News 24's share, leaving it neck and neck with Sky News at 0.4% in all homes and 0.6% in multichannel homes. Its budget was £23.1m, up from £22.9m.
The BBC's radio services managed to increase their share of listening from 54% to 54.9%. Expenditure on its five national analogue stations totalled £193.2m compared with £198.7m last year.
BBC.co.uk is now attracting more than 3m users per month and its budget has risen to £72.3m from £69.2m.
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