I am thinking of getting on a bike again for the first time in over 24 years (I fell off the last time and haven't wanted to since). I have realised that running is not great for my knees and I want to keep fit some other way. I am based in London and can book a free one-to-one and further group sessions with Cycle Confident. However, I have no idea where to start with buying a bike, just something easy and basic and not too pricey. Storage is a slight issue because although have a garage space is tight. I would be cycling off road in parks and not on mountains .