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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Parent entities and officers
Active 5
  • 1
    Burlton, Chris
    Born in September 1973
    Individual (62 offsprings)
    Officer
    icon of calendar 2014-10-09 ~ now
    OF - Director → CIF 0
  • 2
    Mcgeown, Steven
    Born in May 1985
    Individual (89 offsprings)
    Officer
    icon of calendar 2023-01-18 ~ now
    OF - Director → CIF 0
  • 3
    Little, Richard
    Born in October 1979
    Individual (66 offsprings)
    Officer
    icon of calendar 2023-01-18 ~ now
    OF - Director → CIF 0
  • 4
    TRILLIUM SECRETARIAT SERVICES LIMITED - 2009-02-02
    SMIF SECRETARIAT SERVICES LIMITED - 2007-09-27
    icon of address4th Floor, 1 Gresham Street, London, United Kingdom
    Active Corporate (4 parents, 204 offsprings)
    Officer
    icon of calendar 2009-01-12 ~ now
    OF - Secretary → CIF 0
  • 5
    TRILLIUM PPP INVESTMENT PARTNERS LIMITED - 2007-10-04
    TRILLIUM CAPITAL LIMITED - 2007-07-04
    TRILLIUM PPP INVESTMENT PARTNERS NO. 2 LIMITED - 2009-02-02
    icon of addressThird Floor, Broad Quay House, Prince Street, Bristol, United Kingdom
    Active Corporate (6 parents, 47 offsprings)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
    PE - Ownership of voting rights - 75% or moreCIF 0
Ceased 10
  • 1
    Frost, William
    Director born in March 1951
    Individual
    Officer
    icon of calendar 2008-10-16 ~ 2009-01-12
    OF - Director → CIF 0
  • 2
    Rhodes, Andrew Charles Mutch
    Company Director born in January 1970
    Individual (31 offsprings)
    Officer
    icon of calendar 2009-01-12 ~ 2014-10-09
    OF - Director → CIF 0
  • 3
    Birch, Alan Edward
    Company Director born in March 1970
    Individual (1 offspring)
    Officer
    icon of calendar 2009-01-12 ~ 2011-09-15
    OF - Director → CIF 0
  • 4
    Dudgeon, Peter Maxwell
    Individual (2 offsprings)
    Officer
    icon of calendar 2007-06-21 ~ 2009-01-12
    OF - Secretary → CIF 0
  • 5
    Simpson, Jonathan Michael
    Accountant born in January 1973
    Individual
    Officer
    icon of calendar 2017-10-31 ~ 2023-03-31
    OF - Director → CIF 0
  • 6
    LST PPP NOMINEE DIRECTORS LIMITED - 2009-02-02
    icon of addressThird Floor, Broad Quay House, Prince Street, Bristol, United Kingdom
    Active Corporate (4 parents)
    Officer
    2011-09-15 ~ 2017-10-31
    PE - Director → CIF 0
  • 7
    icon of addressLacon House, Theobalds Road, London
    Dissolved Corporate (6 parents, 81 offsprings)
    Officer
    2007-05-09 ~ 2007-06-21
    PE - Nominee Secretary → CIF 0
  • 8
    PPM HOLDINGS LIMITED - 1998-07-17
    icon of address140, London Wall, London
    Dissolved Corporate (7 parents, 23 offsprings)
    Officer
    2007-06-21 ~ 2009-01-12
    PE - Director → CIF 0
  • 9
    SHELFCO (NO. 453) LIMITED - 1990-04-09
    icon of addressLacon House, Theobalds Road, London
    Dissolved Corporate (5 parents)
    Officer
    2007-05-09 ~ 2007-06-21
    PE - Nominee Director → CIF 0
  • 10
    TRILLIUM HOLDINGS LIMITED - now
    PPM CENTRAL GP LIMITED - 1998-07-17
    TRILLIUM INVESTMENTS GP LIMITED - 2001-03-22
    icon of address5 Strand, London
    Active Corporate (7 parents, 54 offsprings)
    Officer
    2007-06-21 ~ 2009-01-12
    PE - Director → CIF 0
parent relation
Company in focus

SEMPERIAN NO.21 LIMITED

Previous names
TRILLIUM NO.21 LIMITED - 2009-02-09
SHELFCO (NO. 3421) LIMITED - 2007-06-21
LAND SECURITIES TRILLIUM NO.21 LIMITED - 2009-01-26
Standard Industrial Classification
82990 - Other Business Support Service Activities N.e.c.

Related profiles found in government register
  • SEMPERIAN NO.21 LIMITED
    Info
    TRILLIUM NO.21 LIMITED - 2009-02-09
    SHELFCO (NO. 3421) LIMITED - 2009-02-09
    LAND SECURITIES TRILLIUM NO.21 LIMITED - 2009-02-09
    Registered number 06240903
    icon of address4th Floor 1 Gresham Street, London EC2V 7BX
    PRIVATE LIMITED COMPANY incorporated on 2007-05-09 (18 years 7 months). The company status is Active.
    The last date of confirmation statement was made at 2025-05-09
    CIF 0
  • SEMPERIAN NO. 21 LIMITED
    S
    Registered number 06240903
    icon of address4th Floor 1, Gresham Street, London, EC2V 7BX
    Limited By Shares in Companies House, England And Wales
    CIF 1
child relation
Offspring entities and appointments
Active 1
  • INHOCO 465 LIMITED - 1999-05-11
    AMEC INVESTMENTS LIMITED - 2008-01-28
    TRILLIUM PPP HOLDINGS LIMITED - 2009-02-02
    AMEC SPARECO (7) LIMITED - 1999-10-19
    icon of address4th Floor 1 Gresham Street, London, United Kingdom
    Active Corporate (4 parents, 3 offsprings)
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    CIF 1 - Right to appoint or remove directorsOE
    CIF 1 - Ownership of shares – 75% or moreOE
    CIF 1 - Ownership of voting rights - 75% or moreOE

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Contains public sector information retrieved at 12 November 2025 and licensed under the Open Government Licence v3.0.