The latest output of the partnership of CBN modeling and Samknows data, and used by the BBC's broadband day reporting, is a league table of the communities with the poorest connectivity in Great Britain:

1. Rural Communities
2. Farming and Forestry
3. Urban Commuter
4. Mature Urban Households
5. Struggling Urban Families

Based on Office of National Statistics classifications, the league table is made up of communities where the expected ADSL broadband speed is 2 Mbps or less and where alternatives such as Virgin cable services are not available.

It is perhaps no surprise that rural economies top the list but the high positions of urban commuters, who might otherwise be home-workers creating less congestion and a smaller carbon footprint, and struggling urban families, who benefit most from online access to education and the jobs market, present more of an unrecognised problem.

This is from the first wave of analysis being carried out by CBN and Samknows as we model and map broadband Britain - present and future - in unprecendented detail.