Mobile broadband speeds in the UK can vary greatly depending on the network, location, and whether you're using 3G, 4G, or 5G.
1. 3G: It offers download speeds of up to 7.2 Mbps, but the average speed is often around 1-3 Mbps.
2. 4G: It is significantly faster than 3G, offering average download speeds of around 20-30 Mbps, although it can theoretically go up to 150 Mbps.
3. 5G: This is the latest generation of mobile network technology, and it's much faster than 4G. The average speed of 5G in the UK is around 150-200 Mbps, and it can theoretically reach up to 1 Gbps (1000 Mbps).
Please note that these are average speeds and actual speeds can vary based on several factors including network congestion, distance from the tower, and the specific device being used.