Mark Bithrey founded B3 Designers in 2002, offering strategy, brand and interior design to clients in the hospitality industry. Through B3 Designers, his vision is to design spaces that have a positive impact on people and places.

B3 Designers have worked on iconic restaurants, F&B spaces in large hotels, bars, cafes, hotel rooms and spaces, across the UK and Europe. Some of B3's clients include Marriott Hotels, The Ritz-Carlton, StayWell Group, Moving Picture Company, the Royal Opera House in London, and Michelin Star Chefs Tom Aikens with Tom's Kitchen, Elizabeth Haigh with Mei Mei, and Chef Vivek Singh with the Cinnamon Group.