- NEIL SIZER- Born November 1972 - PYE HALL, FIDDLERS LANE, EYE, SUFFOLK, UNITED KINGDOM, IP23 7NS 
- JOHN SIZER- Born October 1945 - 4 ORKNEY COURT, CLIVEDEN ROAD, TAPLOW, BERKSHIRE, SL6 0JB 
- JOHN SIZER- 6 FRONT STREET, EAST STOCKWITH, GAINSBOROUGH, DN21 3DJ 
- Ryan SIZER- Born January 1979 - Dylan Thomas Theatre, Gloucester Place, Maritime Quarter, Swansea, SA1 1TY 
- ALAN SIZER- 41 GOULD ROAD, TWICKENHAM, SURREY, TW2 6RN 
- MARK SIZER- Born June 1980 - UNIT 7, ASTRA CENTRE EDINBURGH WAY, HARLOW, ENGLAND, CM20 2BN 
- JOHN SIZER- Born July 1973 - 25 NELSON WAY, MUNDESLEY, NORWICH, NORFOLK, NR11 8JD 
- ALEX SIZER- Born August 1989 - UNIT 18 ELYSIUM GATE, 126 NEW KINGS ROAD, LONDON, ENGLAND, SW6 4LZ 
- RICHARD TAYLOR MRCVS LTDActive - Proposal to Strike off- 08309331 - Incorporated on 27 November 2012 
- TRM SIZERS LIMITEDActive - Proposal to Strike off- 06720280 - Incorporated on 10 October 2008 
- MR RICHARDS SERVICES LTDDisolved- 14418460 - Dissolved on 13 February 2024 
- MR PAUL GARWOOD LIMITED- 13796044 - Incorporated on 13 December 2021 
- JOHN SIZER- 4 ORKNEY COURT, CLIVEDEN ROAD, TAPLOW, BERKSHIRE, SL6 0JB 
- JOHN SIZER- Born September 1938 - CHARNWOOD, 15 SELWYN ROAD, BURNTWOOD, STAFFORDSHIRE, WS7 9HU 
- DAVID SIZER- Born December 1960 - 111B ORMESBY BANK, ORMESBY, MIDDLESBROUGH, CLEVELAND, ENGLAND, TS7 9HL 
- MR PAUL COLEMAN LIMITED- 09822428 - Incorporated on 13 October 2015 
- LEE PAUL RICHARDS LIMITEDDissolved- 07258186 - Dissolved on 27 December 2011 
- JOHN SIZER LIMITEDActive - Proposal to Strike off- 05128433 - Incorporated on 14 May 2004 
- SIZERGH ENERGY LTD- 08213734 - Incorporated on 13 September 2012 
- SIZER GOLF LIMITEDDisolved- 14973835 - Dissolved on 22 July 2025