Broadband & Mobile Availability for Isles of Scilly

Official Broadband and Mobile Statistics for 2024

Availability of Ultrafast (Full Fibre) connection is considerably lower than the 70% national standard (Sep 2025), sitting at just 6.6% in Isles of Scilly. 5G signal reach is very high at 78.52%, indicating Isles of Scilly's status as a priority area for new mobile infrastructure.

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Broadband Network Coverage for Isles of Scilly

Broadband TypeAvailabilityAvg Download SpeedAvg Upload Speed
Ultrafast
(Above 300 Mbit/s)
6.6%1000 Mbps115 Mbps
Superfast
(Below 100 Mbit/s)
91.3%61 Mbps16.2 Mbps
Standard
(Below 30 Mbit/s)
1.7%21.5 Mbps2.8 Mbps
Below USO
(Below 10 Mbit/s)
0.1%6.4 Mbps1 Mbps

Source: Ofcom Connected Nations data, (July 2024). Some data may be overlapping or lacking accuracy

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Mobile Network Coverage & Non-Spots

A snapshot of signal strength across Isles of Scilly's area and surroundings, showing the reliability of current networks and future readiness.

Future-Ready Signal

5G

16.5% above UK average

This shows the percentage of land area covered by at least one 5G network. The score of 78.52% is significantly above the national average (62%), indicating exceptional investment and future readiness.

Reliable 4G Coverage

4G

96.0% below UK average

This critical score shows the percentage of Isles of Scilly's land area where all four major networks provide a dependable 4G signal. At 0%, there are notable mobile ‘not-spot‘ coverage gaps.

Basic 3G Safety Net

3G

76.5% below UK average

This indicates the reliability of the basic signal across the entire region (as of July 2024). At 22.62%, the safety net for basic calls shows some gaps.

Mobile Geographic coverage (Spring 2025)
  • 3G is being phased out by most operators, making its coverage minimal and its use declining. Presence seems to be limited in rural areas.
  • Coverage varies significantly, with rural areas having much lower 4G and 5G availability than urban areas.
  • The percentage of 5G connections is growing rapidly, while the percentage of 4G connections is decreasing and overtaken more often.