As you know very well Karl, a business connection is unlikely to give any better reliability over a home counterpart, especially when it comes to standard ADSL.
Also, as you'll see, the OP has already said Sky would be acceptable and the fact that their LLU service is one of the better and more reliable in the UK.
When it comes to the reliability of a circuit, there is really no difference between the ISPs as they operate over the same copper. If the copper isn't great, neither will be the connection with most ISPs.
Edited by uno (Thu 09-Sep-10 12:17:34)