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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 3
  • 1
    Bunka, David Harry John, Dr
    Chief Technical Officer born in January 1978
    Individual (4 offsprings)
    Officer
    icon of calendar 2021-10-18 ~ now
    OF - Director → CIF 0
  • 2
    Tolley, Arron Craig, Dr
    Company Director born in November 1977
    Individual (5 offsprings)
    Officer
    icon of calendar 2023-08-21 ~ now
    OF - Director → CIF 0
  • 3
    APTAMER GROUP LIMITED - 2021-12-08
    BLUEBIRD 123 LIMITED - 2015-04-20
    icon of addressWindmill House, Innovation Way, York, England
    Active Corporate (6 parents, 4 offsprings)
    Profit/Loss (Company account)
    -355,026 GBP2018-04-01 ~ 2019-03-31
    Person with significant control
    icon of calendar 2016-04-06 ~ now
    PE - Ownership of shares – 75% or moreCIF 0
Ceased 4
  • 1
    Tolley, Arron Craig, Dr
    Scientist born in November 1977
    Individual (5 offsprings)
    Officer
    icon of calendar 2014-05-27 ~ 2023-05-16
    OF - Director → CIF 0
    Dr Arron Craig Tolley
    Born in November 1977
    Individual (5 offsprings)
    Person with significant control
    icon of calendar 2016-04-06 ~ 2021-12-22
    PE - Has significant influence or controlCIF 0
  • 2
    Tolley, Melanie
    Director Of Operations born in August 1972
    Individual
    Officer
    icon of calendar 2015-08-01 ~ 2015-11-10
    OF - Director → CIF 0
  • 3
    Quinn, Robert, Dr
    Company Director born in September 1982
    Individual
    Officer
    icon of calendar 2023-05-16 ~ 2023-08-21
    OF - Director → CIF 0
  • 4
    Brown, Eleanor
    Chief Financial Officer born in January 1975
    Individual
    Officer
    icon of calendar 2021-10-18 ~ 2022-06-13
    OF - Director → CIF 0
parent relation
Company in focus

APTASORT LIMITED

Previous name
APTAMER THERAPEUTICS LIMITED - 2019-05-25
Standard Industrial Classification
99999 - Dormant Company
Brief company account
Equity
Called up share capital
1 GBP2024-06-30
1 GBP2023-06-30
Retained earnings (accumulated losses)
-81,592 GBP2024-06-30
-81,592 GBP2023-06-30
Equity
-81,591 GBP2024-06-30
-81,591 GBP2023-06-30
-53,707 GBP2022-06-30
Profit/Loss
Retained earnings (accumulated losses)
-27,885 GBP2022-07-01 ~ 2023-06-30
Average Number of Employees
22023-07-01 ~ 2024-06-30
22022-07-01 ~ 2023-06-30

  • APTASORT LIMITED
    Info
    APTAMER THERAPEUTICS LIMITED - 2019-05-25
    Registered number 09058803
    icon of addressWindmill House, Innovation Way, York YO10 5BR
    Private Limited Company incorporated on 2014-05-27 (11 years 6 months). The company status is Active.
    The last date of confirmation statement was made at 2025-05-27
    CIF 0
child relation
Offspring entities and appointments
Active 0
  • Not found in our database.

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Contains public sector information retrieved at 16 October 2025 and licensed under the Open Government Licence v3.0.