In some cases you will learn of the need for a discovery enquiry
as a result of a S19 enquiry for a later year. Where you then have
reasonable grounds for believing the decision for the earlier year
is incorrect and this amounts to fraud or neglect and it is too
late to open a S19 enquiry for that year you can open a S20(4)
discovery enquiry.
You might already have enough information to enable you to
revise the award, for example you have been given the date on which
a partner moved in with the claimant. Alternatively you might need
further details, for example the claimant has admitted overstating
childcare costs but has not yet provided details of the amounts
paid throughout the year.
Once you know you will be extending your enquiries into the
earlier year you should write to the claimant advising them
that:-
You will need to consider penalties in the normal way and if you are seeking a contract letter of offer this will include the adjustment for the discovery year.