I have an ex employee who is now requesting a copy of their signed contract of employment.

The employee left the company on bad terms as their contract was terminated within their first year of employment for a number of reasons.  The employee was given a full months paid notice and an open reference,  even with this the ex employee was not happy and is still with holding company information which has been requested on several occasions with no avail.

Are we within are right to withhold sending the contract as requested until they have returned the outstanding information to us?