On the whole visa entry thing, I thought I would have a quick look. There are 56 countries outside of the EU, EEA and British Protectorates whose citizens can enter the country without a visa. See here -
https://en.wikipedia.org/wiki/Visa_p...United_Kingdom
In return, UK citizens have the right to enter 157 countries without a visa (or can get a visa on entry) See here -
https://en.wikipedia.org/wiki/Visa_r...itish_citizens