Hey, in windowed mode you should be able to resize to whatever size you like by dragging the corners of the app and seeing if that helps, but thanks, I'll investigate more robust solutions!
Unfortunately while it was resizing the window the content stayed at that size, hopefully it's solely affecting me. The initial boot would resize the unity logo etc for loading but it would just crop the menu and initial prompt window so that the options/okay button wasn't available for example. Appreciate the response and I hope it's not a pain!