Fast.co.uk Broadband Speedtest and troubleshooting
Fast.co.uk internet Speed Checker
Simply click on the “Go” button on the Ookla Speed Checker to see the broadband speed of your Fast.co.uk internet connection.
Details on how to fix problems with your Fast.co.uk internet connection can be found below the speed test widget.
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Troubleshooting Fast.co.uk broadband performance issues

Before starting to troubleshoot the speed of your Fast.co.uk internet connection, we suggest that you perform a Fast.co.uk Internet Speedtest to confirm your current internet speed.
You may also want to find out the guaranteed minimum download speed you on your broadband package from Fast.co.uk.
You can get this info by checking your Fast.co.uk broadband bill, your Fast.co.uk contract or by contacting Fast.co.uk.
Probable causes of Fast.co.uk’s slow internet performance
Is it your Fast.co.uk broadband that is running slow or could it be your device (laptop/smartphone/PC)?
You may need to consider how many applications are currently running on your device.
The performance issue may be due to the over-utilization of your device’s resources i.e RAM/memory/CPU Processor and not a problem with Fast.co.uk’s broadband connection.
If you are on a PC then you may use the task manager to check your Processor and RAM utilization.
On any other device, you should try restarting the device which hopefully will terminate all apps that may have been hogging system resources.
Re-run the Fast.co.uk Speed test on your PC and your phone to see how the speed test results compare between the two devices.
Hopefully this should provide you with more info to work with in terms of whether the issue lies with your PC/Smartphone or the Fast.co.uk internet connection.
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Is the wireless network the issue?
The root cause of the performance problem could be your Wifi network and not the Fast.co.uk broadband internet connection.
You could rule out the Wi-Fi network by simply connecting your PC directly to the Fast.co.uk broadband router using an ethernet cable and then run the Fast.co.uk Speedtest again.
If the performance is better when you are connected by a network cable, this indicates that the issue may be with the Wifi network.
A few other things to investigate:
- Are the Wireless channels that you are using for your Wi-Fi network network (SSID) overlapping with the neighbors?
- Is the Wifi signal from the broadband router obstructed?
- Does your performance get better when you’re stood directly infront of the Fast.co.uk broadband router?
Who is connected to my wireless network?
Have you checked that your Wi-Fi network password has not been hacked? Do you have an un-secured Wi-Fi network? How strong is your Wi-Fi network password? It may be time to update it.
Others could be on your Wifi network and using up all the Fast.co.uk speed by downloading, uploading or even streaming music or videos over your Fast.co.uk broadband connection! Worse than that, they could be conducting illegal activities using your Fast.co.uk broadband connection.

There are three apps to use to analyze your wireless network to see who is connected:
- Microsoft users can use Wireless network watcher
- MAC users can use whoFi (who is on my Wifi)
- wifi network troubleshooting tool WiFi Analyzer
The above apps will scan your Wifi network and produce a list of the everything on your wifi.
Do I need a Wifi booster for my Fast.co.uk broadband?
If you find that there are Wi-Fi coverage gaps at your home, a Wifi network extender also known as a Wifi Booster may be the best solution to strengthen your wireless signal to cover any black spots.
The wireless network booster picks up the existing Wifi network signal as it is becoming weaker and re-transmits the wireless network signal to extend it’s reach.
Place the wireless network extender where your wireless signal from the Fast.co.uk broadband router is becoming weaker.
Position it approximately where your Wifi signal is dropping down to less than 2 signal bars. Walk around your home with a smartphone to determine where this is.
When was the last time you upgraded the Fast.co.uk broadband router?

The Fast.co.uk and broadband infrastructure, in general, are constantly upgraded to provide new features and improve reliability as technology evolves. Ensure that your Fast.co.uk broadband internet router is running on the most up to date software.
Most Fast.co.uk internet routers will allow you to perform the software update by simply logging on the Fast.co.uk broadband router and simply clicking on a button to start the upgrade.
If you cannot do this, contact Fast.co.uk and they will be able to do this for you or talk you through the process.
As well as updating the software, if you have had the same hardware for a long period, it’s worth talking to Fast.co.uk to request for a hardware upgrade.
Is the problem external to your home (at the exchange)?
This is probably the most likely cause for Fast.co.uk broadband performance issues in your area and is more common for broadband connections that are delivered using copper phone lines.
If you are not sure if this is relevant in your case, contact Fast.co.uk who will be able to conduct the appropriate line tests to check if there is a problem on the Fast.co.uk internet connection.
Is the performance issue because of Fast.co.uk Internet congestion?
If you’re finding that the Fast.co.uk internet connection speed in your area is slow during certain periods i.e. weekends or during the evening, it may be because of congestion during peak times.
You should speak to Fast.co.uk to check your guaranteed speed.
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Re-testing your Fast.co.uk internet connection
After the problem has been resolved either by yourself or Fast.co.uk, re-test the broadband connection using at least two separate Speedtests to ensure the fault is resolved:
