You were almost beginning to make sense and then blew it with your last paragraph. There are undoubtedly some benefits from a faster Internet connection, but it's unlikely you'll notice any difference in the time taken to load an HTML page in moving from 2Mbps to 8Mbps. Latency (and the ability of the web server to deliver data) are more likely to be limiting factors.
I realise that many Reg readers may not wish to pay the Murdoch shilling for access to the full Times article, but David Davis wants to spend £5 billion providing 100Mbps access to every household in the UK. If you think that's a sensible economic decision, I have some magic beans that I'm sure you'd like to buy.