Before the pandemic hit live events, disguise’s production technology was used by artists including the Rolling Stones. The London company, founded in 2012 by Ashraf Nehru, 48, designs software and hardware to create visual effects for live and online events. Offices in New York, Los Angeles, Hong Kong and Shanghai, and clients in 50 countries, boosted overseas sales to £29.1 million in 2019 under chief executive Fernando Küfer, 42.