Here's a full list of the UCAS timetable. The sames dates generally apply year on year. In conclusion – not necessarily. You should check that the university courses you are interested in would consider you as a late applicant before you begin. Contact them directly for advice. The UCAS guidance is here. Read the section on late applications. In theory you can apply through UCAS until 30 June. In practice, of course, many courses will have filled. But once you have applied you will be eligible for Extra or Clearing later in the year. Note applications received after June 30 will be entered into Clearing. Find out more about Clearing.