Lez trained at Central School of Art and Design, gaining a degree in Theatre Design. He graduated in 1984 and started his career with his first design for the popular feature film Letter to Brezhnev.

Lez is an Associate Artist of Adventures in Motion Pictures (AMP) for whom he has designed Highland Fling, the multi-award winning production of Swan Lake (1999 Toni Award for Best Costume Design and two 1999 Drama Desk Awards for Set and Costume Design); Cinderella (1998 Olivier Award for Outstanding Achievement in Dance), and The Car Man.

In 1999 Lez won the Barclays Theatre Award for Outstanding Achievement in dance for his designs for Carmen, The Huntchback of Notre Dame, Giselle, Dracula and A Christmas Carol for Northern Ballet Theatre. His other work for NBT includes The Brontes, Strange Meeting and Romeo and Juliet.

Other designs for dance include Greymatter (Rambert), Just Scratchin’ the Surface, choreographed for Adam Cooper and Night Life choreographed by Tim Rushton, and The Nutcracker choreographed by Peter Darrell, all for Scottish Ballet.

His work in theatre includes: David Copperfield, Northanger Abbey, The Last Romantics, Handling Bach, and The Prisoner of Zenda (Greenwich Theatre), The Eleventh Commandment (Hampstead Theatre), A Woman of No Importance, Nude with Violin and Hindle Wakes (Royal Exchange), and The School Mistress (Chichester Festival). In the West End Lez has designed French and Saunders’ Live in 2000 (UK tour), Spend, Spend, Spend (Piccadilly Theatre - 1999 Olivier Award Nomination for Best Set design), Alarms (and Excursions), Jane Eyre, The Sisters Rosenweig, and Neville’s Island (Best Set Design nomination - 1995 Olivier Awards) and Rosencrantz and Guildenstern are Dead (Royal National Theatre).

Designs for opera include productions for Opera Zuid, Hong Kong Arts Festival, Opera North, Glyndebourne Touring Opera, Teatro Bellini, Royal Danish Opera, De Vlaamse Opera and Opera Northern Ireland. Designs for Musicals include Black Goes With Everything (Churchill Theatre, Bromley) Side By Side By Sondheim, (Greenwich Theatre), Cabaret (Sheffield Crucible) and Maria Friedman by Special Arrangement (Donmar Warehouse).