What constitutes the last 4 digits of my driving licence?

If an applicant selected driving licence as one of their ID documents, the system will ask the verifier to enter the last 4 digits of their driving licence number in order to verify it.

The last 4 digits include the 2 digits at the very end, after the space.

For example, if the number is SMITH806704SI9NE 78 the last 4 digits would be NE78.