Class 1 NIC Refund

[djcollins]

I would like clarification of the following situation;

A person was employed for the first 7 months of the year, and has overpaid Class 1 NIC. He then becomes self-employed and earns less than £5,000 (adjusted profit) during the last 5 months of the tax year.

Am I correct in thinking that a refund could be claimed for the Class 1 NIC, and that no Class 4 liability has arisen?

Any help would be much appreciated.

DJC