The discount you get for forfeiting a room doesn't stack up against the disadvantages
Conversely, there is a relatively big premium for a two bed flat as many people want that extra bedroom over a one bed. If you buy a one bed your mortgage payments are more affordable so you don't need to get a lodger and compromise your private living space (which to me is one of the main benefits of home ownership, I had some great flatmates but...).
Laner's advice is good if you want the option of easily renting a room out. Alternatively, do what we did and buy a one bed with a cellar. We've always got the option of going down and creating a few more rooms, for way less than it would cost to sell up and buy a bigger flat.
Conversely, there is a relatively big premium for a two bed flat as many people want that extra bedroom over a one bed. If you buy a one bed your mortgage payments are more affordable so you don't need to get a lodger and compromise your private living space (which to me is one of the main benefits of home ownership, I had some great flatmates but...).
Laner's advice is good if you want the option of easily renting a room out. Alternatively, do what we did and buy a one bed with a cellar. We've always got the option of going down and creating a few more rooms, for way less than it would cost to sell up and buy a bigger flat.