Getting hold of a suitable mortgage to enable you to "buy to let" has become significantly easier in recent years. It was once the case that potential property investors would have to seek out specialist mortgages. If you're looking to buy to let now then you'll find that you won't have to do much "seeking" - most major mortgage lenders offer buy to let mortgages and are keen to find potential borrowers.
As with other mortgages, you should make sure that you shop around to find the type of loan that's right for you.
One difference that you will find when comparing to "traditional" mortgages is that you will be expected to put down a larger deposit. While standard mortgages often allow you to put down a minimal (sometimes non-existent) deposit, buy-to-let mortgages more often involve a downpayment in the region of 15-25% of the value of the property.
Some lenders will often scrutinise the expected rental income that you'll make from your property, to ensure that you'll be able to pay your loan back. They may even include certain conditions, such as restricting the type of people that you can have as tenants. One example would be that some lenders are not keen on properties being rented to students.
Buy To Let Mortgages
Things to consider when buying to let