It's the term after they turn 5, yes? But what happens if they turn 5 in a school holiday e.g. easter holiday is April 20th-27th and their birthday is the 23rd?
Do they have to do the summer term or are they not required to start until the next school year?
Also, if you decide not to take up your accepted place until their 5th birthday, are the school required to hold the place until then or could they consider that forfeiting it and give it to another pupil?