Her remit will include delivering corporate events in the UK and Europe.
Events director Kate Park has also returned to the agency, which organises more than 500 events a year, from maternity leave.
Both will join the management team based at TLC’s headquarters in Manchester.
TLC managing director Liz Taylor said: "We have seen a strong increase in the number of private events that TLC is handling this year and also a steady but positive trend in the corporate sector, so strengthening the team to deal with the growth in demand has been essential."
Selfridges, RBS and Thomas Cook Airlines are among the agency’s clients.