The table showing the disparity in NGA rollouts across cities, with Inverness scoring just two percent.
Derry has the best availability of superfast broadband anywhere in Britain, far ahead of other locations such as London, Manchester and Exeter.
Ofcom research found Derry had a 99 percent availability of next-generation access (NGA) services from either BT or Virgin Media by the end of 2013.
By contrast, London had just an 88 percent availability of superfast services.
This was the same in 2012 and 2013, as both BT and Virgin Media only extended their networks into areas where the other was already available, Ofcom explained.
Ofcom monitored other cities including Birmingham, Manchester, Cambridge, Exeter, Glasgow, Inverness, Cardiff, Bangor and Belfast.
Ofcom’s data also found an interesting correlation between the availability of broadband in city areas with the lowest average income.
For example, in Manchester superfast broadband availability in the lowest-income area is 80.6 percent, compared with 86 percent across the entire city.
In Glasgow 57.8 percent of premises in low-income areas have access to superfast broadband, ten percent below the city average of 67 per cent.
BT said the report proved that fibre broadband was now well embedded in most major locations, but acknowledged that more work lay ahead.
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