While it is possible to get work at this age, it's very difficult to get work that allows you to maintain a normal lifestyle without selling your house, because maintaining a mortgage in one part of the country while renting in another part of the country on pay of between £20-24,000 isn't possible.
I speak from experience, having got my first commercial flying job at 39. I am now in a position where I have to decide whether to sell my house or leave commercial aviation to go back to my previous career. The pay there wasn't fantastic, but it did allow me to live at home and it did cover my living costs.