UK’s worst postcodes for mobile network quality | Tech News

New analysis from client watchdog Which? and mobile network monitoring firm Opensignal has discovered the UK’s worst postcodes for mobile signal, naming and shaming the particular areas of the nation the place discovering bars is least dependable.

The postcode SA70 within the Welsh seaside city of Tenby is “the worst postcode for mobile network quality” within the UK in line with Which?, who mentioned mobile customers within the space solely acquired a “good” connection 54.3 p.c of the time on average throughout the nation’s 4 mobile networks of EE, O2, Three and Vodafone.

Three customers within the space suffered the worst signal, solely getting a strong connection 38 p.c of the time, with EE and O2 faring higher with 71 and 63 p.c respectively.

Opensignal makes use of real-world utilization knowledge drawn from UK shoppers’ mobiles, which is then used to search out a share rating that displays the consistency of mobiles signal proper down to particular postcodes. The outcomes mirror signal knowledge in 2025 up to and together with August.

The second worst postcode for mobile network quality was LD1 in Llandrindod Wells, again a city in Wales, scoring simply 54.8 p.c. Three was again the worst network on this space.

The worst postcodes in England had been TA5 in Taunton and TR43 in Truro, with 56 and 57.8 p.c scores for network quality respectively. O2 was the least dependable networ in each areas with EE the best. Truro residents would possibly despair on the truth two of the city’s different postcodes, TR27 and TR18, had been additionally within the high 10 worst postcodes.

Postcodes in Dudley, Swansea, Medway and Ipswich additionally made it into that high 10.

Perhaps unsurprisingly, massive cities akin to London, Nottingham and Glasgow had been amongst those who had the best mobile signal.

“This research shows just how dramatically the quality of mobile coverage can vary across the UK,” mentioned Natalie Hitchins, Which? Head of Home Products and Services.

“Choosing the right provider can mean the difference between seamless coverage or constantly battling to make a call from the comfort of your own home.”

Tied for the best quality mobile protection within the UK with a rating of 87.8 p.c was SE11 in London (Kensington and Vauxhall) and NG3 in Nottingham. All networks scored 85 p.c reliability or greater.

Other London postcodes SW3 and Se27 scored effectively, as did postcodes in Sutton, Romford, Ilford and Glasgow.

Which? has up to date its online mobile quality map that it says is knowledgeable by knowledge from more than 17 million network checks from Opensignal customers during the last 12 months. You can use the software right here to see which network is deemed to have the best protection in your postcode.

Which? famous that mobile digital network operators (MVNOs) akin to Giffgaff and Smarty use one of the 4 principal mobile networks to supply protection, so customers of these smaller corporations ought to count on very comparable outcomes to the related corresponding network.