Single Lets
Buy-to-Let is by far the most popular investment strategy in the UK. You can buy properties with a dedicated Buy-to-Let mortgage of maximum 80% LTV and rent the property out so that your mortgage is being paid by your tenants.
This has long been a very profitable strategy but recent changes in Tax and Legislations are making it hard for Landlords to earn a decent income. Places like London where yields always have been tighter than other places in the country, will soon have most investors look for other, more profitable strategies.
When choosing Buy-to-Let as your strategy, do keep in mind that you have certain costs that you will have to take in account like maintenance, management fees etc. You should also take in account that there may be void periods between tenancies.