- Mark, Dr HAUMANN- Born April 1976 - 1/307 Garratt Lane, London, England, SW18 4DX 
- Mark Ian, Dr SMEED- Born September 1970 - 138 High Street, Crediton, Devon, United Kingdom, EX17 3DX 
- MARK DRYBURGH- Born October 1967 - 4 MCNAB GARDENS, LADY ANNE GATE, FALKIRK, STIRLINGSHIRE, FK1 5BF 
- Jon Mark, Dr TRUBY- Born April 1984 - Kemp House 160 City Road, London, United Kingdom, EC1V 2NX 
- MARK DRISCOLL- Born December 1963 - 14 SEVEN WAY, APPERLEY, GLOUCESTERSHIRE, UNITED KINGDOM, GL19 4DA 
- Mark, Dr FINDLEY- Born December 1963 - Business Support Centre 5 Beacon Way, Hull, England, HU3 4AE 
- Helmut, Dr MARKO- Born April 1943 - Red Bull Technology Campus, Stewart Building, Bradbourne Drive, Tilbrook, Milton Keynes, United Kingdom, MK7 8BJ 
- Mark, Dr TOSHNER- Born January 1977 - Wrexham Enterprise Hub Rhosddu Road, Wrexham, Wales, LL11 1AT 
- Mark, Dr PROCTOR- Born November 1966 - Units 1 & 2 Dark Gate Offices, 3 Red Street, Carmarthen, Wales, SA31 1QL 
- MARK EDWARD DRY- Born March 1983 - SNOW WHITE COTTAGE GREAT HORMEAD, BUNTINGFORD, HERTFORDSHIRE, ENGLAND, SG9 0NT 
- MARK JAMES DREW- Born November 1970 - 35 PALLANCE ROAD, COWES, ENGLAND, PO31 8LW 
- MARK DRINKALL- Born December 1966 - APPARTMENT 1 16 SOUTH ROAD, LANCASTER, LANCASHIRE, LA1 4XD 
- MARK DRUMMOND- Born October 1971 - 4 PRENTICE CLOSE, SWADLINCOTE, ENGLAND, DE12 6DL 
- Mark, Dr BISSETT- Born November 1985 - 3rd Floor 86-90 Paul Street, London, United Kingdom, EC2A 4NE 
- Mark, Dr BROOKES- Born September 1966 - Cba 39 Castle Street, Leicester, LE1 5WN 
- MARK DRUMMOND- 5 CLYDE VIEW, PAISLEY, SCOTLAND, PA2 7AA 
- MARK DRAYCOTT- Born February 1976 - 27 OLD GLOUCESTER STREET, LONDON, UNITED KINGDOM, WC1N 3AX 
- Mark, Dr WIDGERY- Born May 1981 - Jsa Service Ltd 4th Floor - Radius House, 51 Clarendon Road, Watford, Hertfordshire, England, WD17 1HP 
- MARK DRUMMOND- Born June 1959 - UNIT 1 THE CAM CENTRE WILBURY WAY, HITCHIN, HERTFORDSHIRE, ENGLAND, SG4 0TW 
- Markus, Dr GAMPP- Born January 1973 - 160 Aldersgate Street, London, England, EC1A 4HT