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A new interactive map reveals London’s worst areas for internet speed

City Hall said parts of London are blighted by ‘not-spots’ – find out if your home is affected

India Lawrence
Written by
India Lawrence
Staff Writer, UK
Internet connectivity map
Image: Mayor of London
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Are you convinced that your house has the slowest internet in London? You don’t need us to tell you that internet connection in the city is bad. But where is actually the worst?

City Hall has released an interactive map showing exactly where in London has the fastest internet, and where you’re likely to be stuck watching the spinning wheel of death.  

The map was created after the Mayor of London’s office was told parts of the city were still blighted by ‘not-spots’ where locals struggle with slow internet. On Tuesday, March 11 the London Assembly's Economy, Culture and Skills Committee was told that much work was still to be done to roll out full-fibre internet connectivity across the capital. 

‘There's a lot of not-spots where business owners are struggling,’ Greater London representative of the England Policy Unit at the Federation of Small Businesses, Laura Timm, told the committee. 

The difference in internet connectivity can be felt in as small a distance as across the street, Timm explained. 

‘We even have cases where business owners say that across the street, they can have a superfast fibre connection, but on their side of the street, they cannot,’ she said. 

Timm added that people who had moved to London were surprised to find their internet connection had been better outside of the city. 

According to Ofcom data analysed by City Hall 66.7 percent of London properties have access to full-fibre broadband – internet connection which has the fastest speed, and isn’t likely to slow down during busy periods. 

Where has the worst internet in London?

In some boroughs there is considerably less full-fibre coverage. In Enfield, only 31.6 percent of homes have full-fibre coverage, and in Barnet it’s 44.2 percent.

Meanwhile, some smaller pockets of the city still don’t have connections of 30Mb/s or higher. This is the speed generally deemed necessary to comfortably cover the essential internet demands of small households, supporting between 1-4 devices or users.

In Upminster 12 percent of premises don’t have 30Mb/s (the speed deemed necessary for the essential internet demands of small households with 1-4 devices), while 7.4 percent don’t even have connections of 10Mb/s.

In St James’ ward in Westminster, which includes the Houses of Parliament, 33.1 per cent of premises don’t have connections of 30 Mb/s or higher. Meanwhile 32.1 percent of the City of London doesn’t have access to 30Mb/s or higher.

You can find the interactive map here.

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