We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies. You can understand more and change your cookies preferences here.

What broadband speed do I need?

By Jon Barrow

Put us to the test

Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

What broadband speed do I need?

Superfast broadband sounds appealing. But just how fast is it and do you really need it? Read on to find out.

Speed is a crucial consideration when you're deciding which broadband package is right for you. Too slow and you'll struggle to do the things you need to do; too fast, and you may be paying for a service you don't really need.

The best speed for you depends on a couple of things: how you use the internet and where you live.

Once you've decided on the speed you need then find out which are the best and worst broadband providers of 2019.

Do you need to switch to get faster broadband?

Not every broadband provider offers the same speeds - some providers will only let you choose between two different speeds, while others have four or five on offer. You may be able to get a faster connection by choosing a different provider.

How fast a connection you'll get also depends on where you live - unfortunately, the fastest speeds aren't available everywhere. So before agonising over which speed to go for, it's worth finding out which deals are available where you are - and how much they cost - using Which? Switch Broadband.

Standard vs fibre broadband

'Standard' broadband packages in the UK use ADSL technology and so transmit data over the existing Openreach phone network. This means they're widely available, though average download speeds are 10-11 megabits per second (Mbps) and it can be far less if you live a long way from the nearest telephone exchange. 

Standard broadband used to be the most popular type of connection, but customers are increasingly moving to speedier options. Super- and ultrafast packages use more efficient fibre optic cables to transmit data. This means they can reach faster speeds, though prices are higher and they're not available in all parts of the country.  If you feel standard broadband is adequate for you, use our standard broadband deal reviews to find the perfect package.

It's worth noting that very few fibre packages actually offer a fibre connection from your house all the way through to the exchange. Instead the vast majority use fibre to connect the exchange to the cabinet in your street and then switch to the phone line for the final leg into your house. This type of connection - called Fibre to the Cabinet or FTTC - offers average speeds of between 63Mbps and 67Mbps. Compare these broadband deals using our fibre broadband deal reviews.

Only a tiny proportion of houses - approximately 2% of homes in the UK - are able to receive pure fibre directly from the exchange (known as FTTH, Fibre to the Home, or FTTP, Fibre to the Premises) and hence can benefit from speeds of up to 1Gbps.

The benefits of faster broadband speeds

Fast speeds allow for quicker downloads, uninterrupted streaming and also help to reduce the problems caused when different family members log on at the same time. They let you seamlessly enjoy services such as online radio, video on-demand and catch-up TV at the same time, while fibre's faster upload speeds also make life easier when you're sharing photos online or making video calls.

As the graphic below illustrates, at its fastest the difference between downloading a film from a service such as iTunes is about 90 seconds for fibre optic vs around 20 minutes for ADSL. A good fibre connection should put an end to any stuttering and buffering of on-demand TV, too.

Check the speed of your broadband package with our interactive broadband speed checker.

Superfast broadband speeds

Do I need to get superfast broadband?

Fibre broadband is great but isn't necessary for everyone. For browsing the web, checking emails, uploading the odd photo to Facebook and even streaming from BBC iPlayer or Netflix, you don't need a superfast or ultrafast connection.

For iPlayer you need 2Mbps of sustained bandwidth to watch standard-definition content or 3Mbps for high-definition, while the minimum recommended broadband speed for Netflix is 1.5Mbps. However, you will likely benefit from a speedier connection if you regularly:

  • Use your broadband at the same time as other people in your home
  • Download films or large online files on a regular basis
  • Use online TV catch-up services from more than one device
  • Upload videos and other large files to the web
  • Play video games online
  • Use video-calling services, such as Skype
  • Live in an area where broadband speeds are low

Compare the packages on offer using our superfast fibre broadband deal reviews.

What about ultrafast broadband?

A connection is generally considered 'ultrafast' if it's 100Mbps or faster. Some of the providers that use the OpenReach network - such as BT and TalkTalk - offer ultrafast connections, but only to customers in certain parts of the country.

Virgin Media is the only major provider that doesn't use the Openreach network. Instead it uses its own fibre optic cables to connect its street cabinets to the phone exchange and then uses coaxial cables to link the cabinet to customers' homes. Coaxial cable is faster than standard phone lines, so most of Virgin Media's deals are ultrafast - it offers average speeds up to 362Mbps.

Find a speedy great-value package by browsing our ultrafast fibre broadband deal reviews.

How accurate are broadband speeds?

Speed is clearly important. But the reality is that not all of us will get the average speeds that providers quote in their ads. That is because companies advertise average speeds available to at least 50% of customers at peak times - meaning the other 50% of customer could get lower speeds.

This is a vast improvement on broadband ads used before May 2018, when providers could advertise lofty 'up to' speeds that only had to be available to 10% of customers. We're pleased that this change has been made, but we think there's still more that could be done to improve broadband in the UK.

Learn more about our broadband speed campaign and pledge your support.


Related products

See all broadband deals