Camilla Kemp departed last year.
The company was founded by two former Dark Horses employees.
He joins in March.
Havas London is the incumbent.
Review is in early stages.
Lecoeur becomes chief client officer.
Studio will continue to be run by Derek Moore.
Run Deep has been set up by former managing directors of M&C Saatchi Sport & Entertainment.
The agency has hired five creatives from Adam & Eve/DDB, Mother London and Anomaly.
The work has been created by Wonderhood Studios.
This year's event takes place from 17 to 21 June.
The agency also works with the Department for Education on its teacher recruitment account.
The film shows a man taking up running after searching for neck stretches.
She will work on attracting, growing and retaining talent.
She will continue to be based in London.
Head First Award follows broadcaster's 'Britain get talking' initiative.
Work has been created by BBH.
Judges will be looking for work that uses 'wit and satire to provide amusement'.
He has worked at DDB since 2016.
The ad has been directed by Jeff Low through Biscuit Filmworks.