How does satellite internet work in the UK?

Written by the Brdy editorial team. Published 14 October 2026. 7 minute read.

In short: a dish at your site talks by radio to a satellite passing overhead. The satellite passes your traffic to a ground station, which connects to the internet over fibre, and the reply comes back the same way in a fraction of a second. Modern services use low Earth orbit satellites, which are close enough to the ground that video calls and cloud software work normally. In the UK the whole system is licensed by Ofcom and needs nothing from the local cable network, which is why it works the same on a hill farm in Powys as it does on a business park in Kent.

Our plain-English guide to satellite broadband covers what it is and who it suits. This piece goes one level down, into how the connection actually works from your roof to the wider internet.

What are the parts of a satellite internet connection?

There are four, and each does a distinct job. The terminal at your premises is the dish and router. The satellites relay the signal. The ground stations, often called gateways, connect the satellite network to the internet backbone. The network operations centre manages the whole system, routes traffic and pushes software updates to every terminal.

Only the first of those sits on your site. Everything else is run by the network operator, which is why installation is a single visit rather than a civil works project.

What does the dish actually do?

A modern low Earth orbit terminal is not a dish in the old sense. It is a flat panel antenna that steers its beam electronically rather than by physically moving. It tracks a satellite as it crosses the sky, then hands over to the next one before the first drops out of view, many times an hour and without the user noticing.

That is why the most important thing on a site survey is the view of the sky rather than the direction. The terminal needs a wide, clear field of view, and a tree line, chimney or neighbouring building in the wrong place will cause short dropouts as satellites pass behind it. In the UK the satellites the terminal favours sit mostly towards the northern part of the sky, so obstructions on that side matter most. A good installer checks this with the operator’s own obstruction tool before anything is mounted.

How does the signal get from the satellite to the internet?

The satellite does not connect you to the internet directly. It relays your traffic down to a ground station within range, and the ground station hands it to the fibre backbone. Replies come back by the reverse route.

Newer satellites can also pass traffic between each other using laser links in space. This lets the network reach a ground station that is not directly below the satellite, which is what keeps vessels and remote sites connected far from land. For a fixed site in the UK, most traffic still takes the short route down to a nearby gateway.

Why does low Earth orbit matter so much?

Distance. Older geostationary satellites sit about 35,786 km above the equator, so a request and its reply travel well over 140,000 km in total, and the round trip takes around 600 milliseconds before anything else is added. That delay is what made old satellite internet poor for calls and anything interactive.

Low Earth orbit networks fly far lower. Starlink satellites orbit at roughly 480 to 550 km and Eutelsat OneWeb at around 1,200 km. Starlink quotes typical latency of 25 to 60 ms on land, which is in the same range as many fixed line connections. We cover the comparison in detail in How close is LEO satellite to fibre performance?

The trade off is coverage per satellite. A low satellite sees a much smaller patch of the Earth and crosses the sky in minutes, so the network needs thousands of satellites and a terminal that hands over automatically. That is the engineering that makes the service work, and none of it needs anything from the user.

How is satellite internet regulated in the UK?

Satellite networks need spectrum and ground station licences from Ofcom to operate in the UK, and the operators that Brdy works with hold them. For a business, the practical point is that the service is a licensed, regulated telecoms service rather than a grey import. Your contract, support and any service level agreement come from the provider you buy through.

Brdy is an authorised reseller of both Starlink and Eutelsat OneWeb, and adds the parts a business usually needs on top of the raw connection: survey and installation, managed routers, a static IP through the Netcelero and Peplink add ons, and technical support.

What affects performance at a UK site?

Four things, in rough order of how often they matter.

Obstructions. The single biggest cause of dropouts is a partial view of the sky. Fix the mounting position and most problems disappear.

The plan. Business plans such as Starlink Priority get network priority over standard plans, which matters at busy times. What happens after a data allowance is used is worth checking before you buy.

Local demand. Capacity is shared within each coverage area, so a busy area at peak time can see lower speeds than a quiet one.

Heavy weather. Very heavy rain or wet snow on the terminal can briefly degrade the signal. Normal British weather is a minor effect rather than a cause of outages, and the terminals melt snow themselves.

Where does it make sense for a business?

Satellite internet earns its place wherever a fixed line is slow, absent, expensive to install or simply too risky to rely on alone. That covers rural sites waiting for fibre, construction compounds and events that need connectivity for weeks rather than years, vessels in the maritime sector, and any business that wants a failover line that shares no cables or ducts with its main connection.

If you are comparing options for a rural site specifically, our guide to rural broadband options in the UK sets satellite against fibre, fixed wireless and mobile side by side.

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