I applied for 3 unis in UK in mid Jan and 2 of them had replied in which one was asking for more details in PS and other Gloucester had sent 5 questions which should be answered but I still didn't hear back from Nottingham Trent.
Well it should not take more than a month or two. It also depends who you wrote to. Best is to contact the admin of that particular programme or atleast that respective department. Always reference your old email. You may give a polite reminder to the person who asked you the question.
Usually admin staff get so many emails and they are usually short staffed in unis.
Try to call the uni admissions department that helps too