At Universal, Lennox helped discover and develop many internationally renowned Canadian artists including The Weeknd, Drake, Shawn Mendes, Justin Bieber, Nelly Furtado, Shania Twain and The Tragically Hip.

[6] In June 2024 it was announced in Billboard Magazine that Lennox's LOFT Entertainment, in partnership with US-based sports & real estate company Oak View Group, was buying Canadian Music Week.

[14][15] Under Lennox, Universal Music Canada developed many Canadian artists like Justin Bieber, Drake, Sam Roberts, Alessia Cara, The Tenors, The Weeknd, Shawn Mendes, Nelly Furtado, The Tragically Hip, Shania Twain, Diana Krall and Bryan Adams.

"[30] In 2018, Lennox rebranded and relaunched CraveTV service as a stand-alone streaming platform simply titled Crave, HBO Max's first international launch partner.

In interviews Lennox has described a responsibility to meet customer expectations,[31] and his plan to attract new subscribers with exclusive world-class original content by producing it in house and patterning internationally.

Lennox is also a director of the Smilezone Foundation, an organization that donates play zones to hospitals and paediatric care facilities, and sits on the board of CARAS MusiCounts.