1. Iceland tops the list with the fastest broadband speed at 279.55 Mbps, allowing a 5GB movie download in just 2 minutes and 27 seconds. 2. The ranking is based on data from Cable.co.uk's Worldwide broadband speed league 2024. 3. The UK ranks 35th with a mean download speed of 110.99 Mbps, taking 6 minutes and 9 seconds to download a 5GB movie.