Why buy in your area?
Rentals anywhere have a bottom limit. House prices do not.
Here, in the NE, a two or three bed terrace goes for £300 - £350 a month.
BUT you can buy one for £25k. IN fact, there's a three bed in Ferryhill for £22k right now. Very good yield!
So, Louise, get thee up to the North East of England, buy three and get a management company to run them for you plus insurances to cover lost rent from unoccupied houses. None of that will cost you more than mortgage charges would have including interest. You'll have no debt, just a hod of house.
With luck you'll make £4.5k a year from each for a good ten, fifteen years and then Durham County Council will decide to knock them down and you get VERY good money for each when you tell then no, you'll take them to Compulsory Purchase unless they give you more. You do have the option to change your mind before they take you to the Beak.
I know this because this is what I did in 2012.
£13k pa income is pretty good from a £75k one off investment, I think.