Company Active LTD

Company profile

Undo Limited

Time Travel Debugging for C/C++ and Java Undo

Undo is the time travel debugging company for Linux. We empower developers to understand complex code and fix bugs faster.

CRN
05494036
Founded
2005
Age
21

Overview

Legal name
UNDO LIMITED
Region
East of England
Registered address
UNIT 21 HOPE STREET YARD
HOPE STREET
CAMBRIDGE
CAMBRIDGESHIRE
ENGLAND
CB1 3NA
Insolvency history
No

Corporate ownership

Updated 06 Jun 2026 16:52

1 level 1 ultimate controller
1
Company Active LTD
Undo Limited
CRN 05494036
2
Direct and ultimate controller Active LTD

Company events

Reference milestones and recent Companies House filing stream events.

13 events
04 Dec
2026

Confirmation statement due

Confirmation Due

Next confirmation statement due date

30 Sep
2026

Accounts due

Accounts Due

Next accounts due date

25 Mar
2026

Notification Of A Person With Significant Control

Persons-with-significant-control

PSC02 | Transaction MzUxMjUxNzE1NmFkaXF6a2N4

Published 25 Mar 2026 11:58

25 Mar
2026

Cessation Of A Person With Significant Control

Persons-with-significant-control

PSC07 | Transaction MzUxMjUxNjA5MmFkaXF6a2N4

Published 25 Mar 2026 11:53

20 Nov
2025

Confirmation statement filed

Confirmation

Last confirmation statement made up date

31 Dec
2024

Accounts filed

Accounts

Last accounts made up date

25 Nov
2024

Confirmation Statement With Updates

Confirmation-statement

CS01 | Transaction MzQ0NDc2MTMwOWFkaXF6a2N4

Published 25 Nov 2024 11:45

25 Nov
2024

Change Person Director Company With Change Date

Officers

CH01 | Transaction MzQ0NDc1NzI5OWFkaXF6a2N4

Published 25 Nov 2024 11:21

25 Nov
2024

Change Person Director Company With Change Date

Officers

CH01 | Transaction MzQ0NDc1NzI4OGFkaXF6a2N4

Published 25 Nov 2024 11:21

21 Nov
2024

Notification Of A Person With Significant Control

Persons-with-significant-control

PSC02 | Transaction MzQ0NDQ0MjM3M2FkaXF6a2N4

Published 21 Nov 2024 01:46

21 Nov
2024

Withdrawal Of A Person With Significant Control Statement

Persons-with-significant-control

PSC09 | Transaction MzQ0NDQzODMxMmFkaXF6a2N4

Published 21 Nov 2024 01:04

22 Aug
2024

Accounts With Accounts Type Unaudited Abridged

Accounts Awaiting analysis

AA | Transaction MzQzMzEyODk5OWFkaXF6a2N4

Published 22 Aug 2024 16:45

28 Jun
2005

Incorporated

Inception

Company registered at Companies House

Public funding

3 awards
First funded
2014
Funded years
2014, 2021
Age at first award
8 years

Projects

2021 Collaborative R&D Lead participant

Deterministic replay of parallel computer programs

1 Jul 2021 to 30 Apr 2022

Awarded
£126,971
Total cost £181,387

Undo is a highly innovative software start up allowing software developers to gain unique insights into their application behavior and debug issues quickly that would otherwise be impossible. This project will allow record and replay technology to be applied to parallel programs solving one of the major technical challenges in modern software development.

2014 GRD Proof of Market Lead participant

Assessing the commercial viability of the Undo Flight Recorder: a new technology that assists in the diagnosis and fixing of Linux and Android software failures in the field.

1 Aug 2014 to 31 Mar 2015

Awarded
£24,999
Total cost £42,043

According to Cambridge University research, developers spend 50% of their development time debugging, representing significant cost to the industry and to the economy as a whole. Undo Software, leading supplier of software quality tools for Linux and Android, is currently developing a new technology to assist in the diagnosis and fixing of Linux software ...

2014 GRD Proof of Concept Lead participant

The Undo Flight Recorder: a new approach to fixing software failures in the field

1 Mar 2014 to 31 Mar 2015

Awarded
£78,999
Total cost £131,753

this is a proposal for the development of a new technology to assist in the diagnosis and fixing of Linux software failures (i.e. bugs): the Undo Flight Recorder (UFR). Software is written by developers working for a Software Vendor, and consumed by an End User. End users may also work for the software vendor (e.g. in-house developers, testing departments...

Product types

Collaborative R&D GRD Proof of Concept GRD Proof of Market