Read more about our advertising policy. The speed test sites listed here test upload and download speeds, while also providing useful assessments on details like jitter or latency. Your results ...

Don't just go by your provider's promise on broadband speed. Use the Which? free speed test to investigate. Here we explain how to use the speed checker. If your broadband isn't as fast as it should ...

Don't just go by your provider's promise on broadband speed. Use the Which? free speed test to investigate. Here we explain how to use the speed checker. If your broadband isn't as fast as it should ...