Ofcom has released its latest quarterly (Q3-2008) Telecommunications Market Data Tables (here), which includes a breakdown of total small business and residential broadband connections. Interestingly Q3 saw BT Retail's market share drop slightly from 26.5% to 26.4%; it had previously been stable for three consecutive quarters. The figures break down as follows:

BT Retail DSL (ADSL) - 4,464,000
Other DSL (exc. LLU) - 3,714,000
Virgin Media (Cable) - 3,626,000
Other inc. (LLU DSL) - 5,120,000

Interestingly nearly every land-line broadband type made gains during the third quarter, especially cheaper unbundled (LLU) providers such as Sky and O2 (Be Broadband). However BT based ISPs (Other DSL [exc. LLU]) continued to decline, losing 132,000 broadband connections.