Broadband Speed

Things you need to know.

Post Office Broadband Connect

By understanding what affects your broadband and making some simple changes, you can enjoy faster broadband speeds.


How fast will my broadband be?

When you sign up with us, move home, or change your broadband package, we'll give you an estimate of the download speed you can expect to get under optimal conditions (If you’re already a Post Office Broadband customer you’ll find this estimate in the welcome letter and email we sent you when you joined us).

This estimate is commonly referred as your 'line speed' or 'sync speed' and is provided as a range, For example, we might say you could get “8 to 10Mbps”. This shows the download speeds your line should be able to reach under the best possible conditions when you’ve got a single device connected to your Wi-Fi router with an Ethernet cable.

Use our speed and availability checker now to check what speed and products we could offer at your address, with no obligation to buy. We'll test your line and tell you the line speed your broadband should be capable of if everything's working at its best.

Are you on our Broadband Connect package?

We offer phone and broadband services to around 95% of the UK, however there are some parts of the UK we don’t cover yet so cannot provide access to our regular low cost broadband and fibre services.

If you do happen live outside our range, we’ll offer an alternative service from BT Openreach which you can join called Broadband Connect.

Broadband Connect is a slower speed service only suitable for basic web browsing and email and not for streaming, movie downloads, gaming or sending/receiving large files. For more information, please see our Broadband Connect support page at

Factors that can affect your broadband speed

Lots of factors can affect your broadband speed. Some you can control, others you can't. If your broadband seems slower than expected, it could be due to one of these.

Outside your home

How close you live to your local telephone exchange: The closer your phone line is to the exchange, the quicker the connection usually is. If you live further away your actual speed may be reduced to ensure quality of signal is maintained.

Time of day: Unsurprisingly, more people go online during the peak time of 6pm-11pm than any other, so you may find download speeds slower during these hours.

Phone line faults: If the local phone line in your area has been damaged, this can cause problems with your broadband. If you hear noise on your phone line or no dial tone then it’s likely you’ll have problems with your broadband too.

Bad weather: Adverse weather conditions like heavy rain, flooding and snow can damage cables and cause short circuits. Damage like this can slow your connection down or cut it out completely.

Busy websites: If a website is particularly busy and everyone is trying to view it at the same time, then you might find it loads slower than usual. There’s not much you can do about this except to keep trying or try again later.


Inside of your home

The length and quality of your home phone wiring: You'll usually get better broadband speeds if the wiring from the master socket to your router is shorter and of good quality.

Your master phone socket: Always connect your router to your master socket where your broadband connection is the strongest for the fastest possible speeds. The master socket is usually in your hallway and is the point where your phone line enters your home

If your Wi-Fi router is connected to one of your extension sockets instead of your master socket, your broadband signal will be forced to travel further and you'll likely get slower broadband speeds.

Wi-Fi router location:

Micro filters: these filter your phone line and allows your broadband and telephone to work at the same time. If they are not correctly installed you will not get optimal speeds and your connection may be intermittent.

Your devices: As a general rule, smaller, cheaper or older devices are less likely to deliver good broadband speeds.

How many people/devices use your broadband connection at once: If several devices use your broadband at once they can slow your connection. Try switching off any devices that don’t need to be used.

Electrical interference from other devices: Electrical equipment like mobile phones with Bluetooth, microwaves and cordless phones and baby monitors can interfere with your wireless signal.

Wireless and wired connection: Connecting to a router wirelessly will be slightly slower than connecting to it with a physical wire.



Simple tips to improve broadband speeds

If you’re experiencing issues with your broadband speed there’s usually a few simple steps you can check to make sure you’re getting the best speeds possible.

If you’ve just joined Post Office or recently moved home, it takes up to ten days for the speed and stability of your broadband to settle down. This is because we need to run tests to make sure you get the best possible speeds and connection in the long term. Please wait a full ten days for this process to finish first before checking your speed.

Use your main telephone socket and micro filters

Your Wi-Fi router should be plugged into your master phone socket. You’ll usually find this master socket in your front room or hall, near where the phone line enters your house. If you can’t find it, try looking from outside where wires enter your house, and then look inside for the socket below that point.

A micro filter is a device that allows your broadband and telephone services to work at the same time –please follow the instructions that come with your Wi-Fi router and install these micro filters for the best performance.

Check your Wi-Fi

Location is important. Place your Wi-Fi router as close as possible to where you will be using it. Obstacles like walls, doors and wardrobes can make a huge difference to your Wi-Fi speeds. Also try restarting your devices once in a while to help you get the best connection.

It’s also worth knowing that your broadband speed is shared with every user or device that is connected to your Wi-Fi router. If three devices are using the internet at the same time, they’ll get roughly a third of the available speed each. You should check if you need all these devices connected to your broadband at the time, and disconnect them if not.

Keep your Wi-Fi router switched on

If you keep switching your router on and off, your broadband looks like it’s disconnecting and your speed may be automatically reduced to make the line more reliable. It’s best to leave your Wi-Fi router switched on 24/7 - to get the best speeds and performance.

Check your Wi-Fi devices

:Remember, smaller, cheaper or older devices are less likely to deliver great Wi-Fi. Devices like newer laptops and computers will probably have better Wi-Fi around your home than smaller phones and tablets.

Also, if you’re using an older slower computer running lots of different applications it could give the impression that your broadband service is slow. If your computer is generally running slow it might be worth getting it looked at or upgraded.

Wired vs Wireless connections

This may not be convenient for some people but a wired connection will be faster and more stable than a wireless connection. 

Try connecting to your router using the Yellow Ethernet cable that comes included with your Wi-Fi router to see if you can notice any improvements.

Other things that can impact broadband speeds

Similar to rush-hour traffic, the speed you’ll get depends on how many people are using our broadband network at one time.

During peak periods, usually between 8pm to 10pm, you may sometimes notice speeds reduce as more people are using the internet. You may also find that some specific websites are slow at busy periods. This is usually a fault of the website, not your broadband. Popular websites can sometimes have capacity issues so please wait a bit and then try again.

How do I solve a broadband speed problem?

If we cannot provide a speed equal to or better than the download speed estimate we gave you before you joined, you should contact our Technical support team and we'll work with you to try and get the matter resolved.

  • If your broadband service has been live for at least 10 days, please follow our “Simple tips to improve broadband speeds” above. These will help solve or rule out any common problems that could affect your broadband connection.

  • If this still doesn't solve the issue check the download speed estimate we sent in your welcome letter when you joined. It will show the speed range your line should be able to reach under best possible conditions (when you've got a single device connected to your Wi-Fi router with an Ethernet cable):

  • You can check your current download speed by running a speed test. (Select GO to run the test. You will get two results, a download speed figure and an upload speed figure).

  • If the download speed test result matches the one in your Welcome Letter, then your broadband is working as we'd expect it to.

  • If your download speed test result is lower than the estimate in your Welcome Letter, please contact our Broadband Technical Support team on 0345 600 3210 (Line are open from 8am to 9pm, Monday to Saturday, 9am to 6pm, Sunday).

Existing customers

Broadband and HomePhone Support

8am to 8pm, Monday to Saturday

9am to 6pm, Sunday

0345 600 3210

0345 600 3210


Free UK support team

8am to 8pm, Monday to Saturday

9am to 6pm, Sunday

0800 092 0514

0800 092 0514