The key to business broadband is contention ratio. The lower the contention ratio the fewer other users sharing your line. This is the main reason business broadband is more expensive than home broadband.
Home broadband packages usually have a contention ratio of 50:1 whereas business broadband usually has a contention ratio of 20:1
All of these broadband packages are designed for business use.
Business Broadband packages
BT Business Broadband
Eclipse Business Broadband
Eclipse Business Fibre Broadband
Plusnet Business Broadband