As The Guardian reports:

The Metropolitan police handed a file to the Crown Prosecution Service following an inquiry into late declarations to his campaign for the deputy leadership of the Labour party.

Hain today put any inconsistencies down to an “innocent mistake” and said he had provided police “with all the information they might need”…

A Metropolitan police spokesman said that the CPS would “advise us on whether any further enquiries are necessary and whether any charges should be brought”.

Hain quit as work and pensions secretary in January after the Electoral Commission referred his late declaration of donations to the police following a “thorough review” of the evidence.