- THOMAS BIRKS- Born December 1946 - 1002 SHERBROOKE ST. WEST, SUITE 2520, MONTREAL, QUEBEC HSA 3L6, CANADA 
- PHILIP BIRKS- 12 WOODCROSS GARDENS, MORLEY, LEEDS, ENGLAND, LS27 9LW 
- ANDREW BIRKS- ASKE STABLES ASKE, RICHMOND, NORTH YORKSHIRE, UNITED KINGDOM, DL10 5HG 
- LESLEY BIRKS- Born November 1967 - UNIT 1, CENTREMARK HOUSE SHEEPBRIDGE LANE, CHESTERFIELD, DERBYSHIRE, UNITED KINGDOM, S41 9RX 
- ALAN ROY BIRKS- Born October 1948 - 81 FORGE COTTAGES, MUSHROOM GREEN, DUDLEY, WEST MIDLANDS, DY2 0EE 
- JUDITH BIRKS- FLAT 4 FOUNDRY PLACE, HIGH STREET, DORCHESTER, UNITED KINGDOM, DT1 1LX 
- MUSTGO LTDDisolved- 09496034 - Dissolved on 4 March 2025 
- GLOBA GROUP LTD- 11938416 - Incorporated on 10 April 2019 
- MR. SELLER GMBH LTDDisolved- 10231132 - Dissolved on 16 August 2022 
- THE SALTING COMPANY LTD.- 09511031 - Incorporated on 26 March 2015 
- MARKETING SOLUTIONS & SERVICES LTD- 13509479 - Incorporated on 14 July 2021 
- GM NAILS LTD- 15727337 - Incorporated on 18 May 2024 
- REBECCA LTDDissolved- 08830506 - Dissolved on 18 August 2015 
- REBECCA 2016 LTD- NI654180 - Incorporated on 4 July 2018 
- REBECCA D LTD- 16446846 - Incorporated on 13 May 2025 
- BCS (BEETON CONSULTANCY SERVICES) LTD- 08324855 - Incorporated on 10 December 2012 
- Marcus BIRKS- Born November 1980 - 32 Haregate Road, Leek, England, ST13 6PR 
- Jordan BIRKS- Born March 1997 - 7 Victoria Road, Widnes, Cheshire, United Kingdom, WA8 0PT 
- Jennie BIRKS- Born October 1966 - Rosedale Lymn Bank, Thorpe St. Peter, Skegness, England, PE24 4PJ 
- STEVEN BIRKS- Born September 1979 - 34 GRAYSON MEWS BRIDGE STREET, BIRKENHEAD, UNITED KINGDOM, CH41 1LY