The British application differs structurally from the American one, and the difference changes how the file is prepared from the outset.
Five choices and course specificity
Up to five programmes are applied to and the application is course specific: it goes not to an institution but to a particular programme at that institution.
That requires the student to have decided what to study at the moment of applying. There is no flexibility to change direction later as there is in the United States.
Choices are not ranked
No order of preference is stated among the five and institutions do not see each other's lists. There is therefore no ranking strategy.
What has to be considered in the selection is whether the grades the five programmes ask for are close together: if all are chosen from the highest band, no safe option remains.
One personal statement
The written part of the application is a single statement and the same text goes to all five programmes. There is no institution specific section.
The direct consequence is that the statement cannot name a particular institution and its subject has to be the course itself. A student applying to five different subjects cannot write a statement that addresses all of them.
Conditional offers
Offers are usually conditional and tied to specific grades: A Level grades or an IB total with Higher Level grades.
If the condition is not met the offer lapses. Predicted grades are therefore more directly decisive in a British application than in an American one.
Admissions tests and interviews
Some courses and some institutions also run their own admissions test or interview. Their registration dates are separate from the UCAS date and earlier.
That separate calendar is the step most often missed: the application is made on time and the admissions test registration is forgotten.
The calendar
UCAS has a central deadline, and for some courses and some institutions that date is markedly earlier.
Current dates are published on the UCAS pages and are checked every year.