If you just use the web for basic tasks, such as emails and the odd bit of browsing, then the cheapest deals which have an average of 11Mb speed should be fine. To give you an idea, Netflix recommends 3Mb for streaming in standard definition and 5Mb for HD. BBC’s iPlayer requires at least 1.5Mb in standard definition. See which speed is best. If you know you need faster, see cheap fibre deals.