If you're travelling with a laptop or smartphone, you'll find a wide range of places offering a wi-fi connection. These range from cafes to B&Bs and public spaces. Nearly all accommodation offers it.
Wi-fi is often free, but some places (typically, upmarket hotels and SYHA hostels) charge.
There are good deals on pay-as-you-go mobile data from mobile-network providers.
If you don't have a laptop or smartphone, the best places to check email and surf the internet are public libraries – nearly all of them have at least a couple of computer terminals, and they are free to use, though there's often a time limit.
Internet cafes also still exist in the cities and larger towns and are generally good value, charging approximately £2 to £3 per hour.