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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
    Hardcastle, Christopher John
    Born in July 1975
    Individual (3 offsprings)
    Officer
    icon of calendar 2007-05-21 ~ now
    OF - Director → CIF 0
  • 2
    Jenns, Adam Thomas
    Born in February 1975
    Individual (6 offsprings)
    Officer
    icon of calendar 1998-07-14 ~ now
    OF - Director → CIF 0
  • 3
    Walker, Lee Michael
    Born in April 1978
    Individual (1 offspring)
    Officer
    icon of calendar 2010-09-01 ~ now
    OF - Director → CIF 0
  • 4
    Fearnside, Joel James
    Born in May 1987
    Individual (1 offspring)
    Officer
    icon of calendar 2021-06-17 ~ now
    OF - Director → CIF 0
  • 5
    icon of addressStudio 10, The Piano Factory, 117 Farringdon Road, London, United Kingdom
    Active Corporate (1 parent, 2 offsprings)
    Equity (Company account)
    660,176 GBP2024-06-30
    Person with significant control
    icon of calendar 2016-10-10 ~ now
    PE - Ownership of shares – 75% or moreCIF 0
Ceased 13
  • 1
    Yeo, Jonathan Philip
    Creative Director born in March 1970
    Individual (1 offspring)
    Officer
    icon of calendar 2013-03-01 ~ 2014-07-09
    OF - Director → CIF 0
  • 2
    Lawlor Davidson, Fraser David
    Head Of Motion Graphics born in May 1982
    Individual
    Officer
    icon of calendar 2010-09-01 ~ 2010-12-31
    OF - Director → CIF 0
  • 3
    Jenns, Timothy
    Director born in December 1947
    Individual (2 offsprings)
    Officer
    icon of calendar 2008-07-15 ~ 2017-07-03
    OF - Director → CIF 0
    Jenns, Timothy
    Individual (2 offsprings)
    Officer
    icon of calendar 2011-04-21 ~ 2022-09-30
    OF - Secretary → CIF 0
  • 4
    Blackfriar Secretaries Limited
    Individual
    Officer
    icon of calendar 1998-07-14 ~ 1998-07-14
    OF - Nominee Secretary → CIF 0
  • 5
    Rowe, William Thomas
    Designer born in December 1973
    Individual (17 offsprings)
    Officer
    icon of calendar 2000-09-25 ~ 2002-07-24
    OF - Director → CIF 0
  • 6
    Freeman, Nicholas
    Designer born in December 1977
    Individual
    Officer
    icon of calendar 2002-02-04 ~ 2004-02-17
    OF - Director → CIF 0
  • 7
    Jenns, Adam Thomas
    Individual (6 offsprings)
    Officer
    icon of calendar 2000-03-31 ~ 2011-04-21
    OF - Secretary → CIF 0
    Mr Adam Thomas Jenns
    Born in February 1975
    Individual (6 offsprings)
    Person with significant control
    icon of calendar 2016-04-06 ~ 2016-10-10
    PE - Ownership of shares – 75% or moreCIF 0
  • 8
    Moresby, Marcus
    Graphic Designer born in September 1978
    Individual
    Officer
    icon of calendar 2004-06-16 ~ 2010-06-18
    OF - Director → CIF 0
  • 9
    Blackfriar Directors Limited
    Individual
    Officer
    icon of calendar 1998-07-14 ~ 1998-07-14
    OF - Nominee Director → CIF 0
  • 10
    Nation, Merlin
    Creative Director born in March 1973
    Individual (3 offsprings)
    Officer
    icon of calendar 2010-09-01 ~ 2011-11-30
    OF - Director → CIF 0
  • 11
    Niklasson, Johan Arvid
    Director born in June 1978
    Individual (4 offsprings)
    Officer
    icon of calendar 2009-11-05 ~ 2011-10-21
    OF - Director → CIF 0
  • 12
    Chapple-canty, William
    Art Director born in October 1981
    Individual
    Officer
    icon of calendar 2013-03-01 ~ 2016-02-26
    OF - Director → CIF 0
  • 13
    Fenwick, Richard Edward
    Individual
    Officer
    icon of calendar 1998-07-14 ~ 2000-03-31
    OF - Secretary → CIF 0
parent relation
Company in focus

MAINFRAME LIMITED

Previous name
OS2 LIMITED - 2000-06-01
Standard Industrial Classification
59111 - Motion Picture Production Activities
Brief company account
Property, Plant & Equipment
10,797 GBP2024-06-30
9,934 GBP2023-06-30
Debtors
157,294 GBP2024-06-30
131,120 GBP2023-06-30
Cash at bank and in hand
2,339 GBP2024-06-30
48,220 GBP2023-06-30
Current Assets
159,633 GBP2024-06-30
179,340 GBP2023-06-30
Creditors
Current
66,202 GBP2024-06-30
72,870 GBP2023-06-30
Net Current Assets/Liabilities
93,431 GBP2024-06-30
106,470 GBP2023-06-30
Total Assets Less Current Liabilities
104,228 GBP2024-06-30
116,404 GBP2023-06-30
Creditors
Non-current
10,000 GBP2024-06-30
20,000 GBP2023-06-30
Net Assets/Liabilities
94,228 GBP2024-06-30
96,404 GBP2023-06-30
Equity
Called up share capital
140 GBP2024-06-30
140 GBP2023-06-30
Retained earnings (accumulated losses)
94,088 GBP2024-06-30
96,264 GBP2023-06-30
Equity
94,228 GBP2024-06-30
96,404 GBP2023-06-30
Average Number of Employees
82023-07-01 ~ 2024-06-30
112022-07-01 ~ 2023-06-30
Property, Plant & Equipment - Gross Cost
Improvements to leasehold property
34,792 GBP2024-06-30
34,792 GBP2023-06-30
Plant and equipment
51,798 GBP2024-06-30
51,798 GBP2023-06-30
Furniture and fittings
26,498 GBP2024-06-30
26,240 GBP2023-06-30
Computers
436,410 GBP2024-06-30
431,623 GBP2023-06-30
Property, Plant & Equipment - Gross Cost
549,498 GBP2024-06-30
544,453 GBP2023-06-30
Property, Plant & Equipment - Accumulated Depreciation & Impairment
Improvements to leasehold property
34,792 GBP2024-06-30
34,390 GBP2023-06-30
Plant and equipment
51,721 GBP2024-06-30
51,707 GBP2023-06-30
Furniture and fittings
25,946 GBP2024-06-30
25,849 GBP2023-06-30
Computers
426,242 GBP2024-06-30
422,573 GBP2023-06-30
Property, Plant & Equipment - Accumulated Depreciation & Impairment
538,701 GBP2024-06-30
534,519 GBP2023-06-30
Property, Plant & Equipment - Increase From Depreciation Charge for Year
Improvements to leasehold property
402 GBP2023-07-01 ~ 2024-06-30
Plant and equipment
14 GBP2023-07-01 ~ 2024-06-30
Furniture and fittings
97 GBP2023-07-01 ~ 2024-06-30
Computers
3,669 GBP2023-07-01 ~ 2024-06-30
Property, Plant & Equipment - Increase From Depreciation Charge for Year
4,182 GBP2023-07-01 ~ 2024-06-30
Property, Plant & Equipment
Plant and equipment
77 GBP2024-06-30
91 GBP2023-06-30
Furniture and fittings
552 GBP2024-06-30
391 GBP2023-06-30
Computers
10,168 GBP2024-06-30
9,050 GBP2023-06-30
Improvements to leasehold property
402 GBP2023-06-30
Trade Debtors/Trade Receivables
Current
68,620 GBP2024-06-30
53,723 GBP2023-06-30
Prepayments
Current
9,387 GBP2024-06-30
6,779 GBP2023-06-30
Debtors
Amounts falling due within one year, Current
157,294 GBP2024-06-30
131,120 GBP2023-06-30
Bank Borrowings/Overdrafts
Current
13,522 GBP2024-06-30
10,000 GBP2023-06-30
Trade Creditors/Trade Payables
Current
3,710 GBP2023-06-30
Other Taxation & Social Security Payable
Current
15,080 GBP2024-06-30
15,997 GBP2023-06-30
Accrued Liabilities
Current
5,196 GBP2024-06-30
5,192 GBP2023-06-30

  • MAINFRAME LIMITED
    Info
    OS2 LIMITED - 2000-06-01
    Registered number 03597627
    icon of addressStudio 10 The Piano Factory, 117 Farringdon Road, London EC1R 3BX
    PRIVATE LIMITED COMPANY incorporated on 1998-07-14 (27 years 5 months). The company status is Active.
    The last date of confirmation statement was made at 2024-07-14
    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 12 November 2025 and licensed under the Open Government Licence v3.0.