Graphcore: who owns it, who runs it and what the accounts show
Graphcore Limited's person with significant control on the Companies House register is Softbank Group Corp. In the 15 months to March 2025 Graphcore Limited reported turnover of $92m (about £72m).
Graphcore files its accounts in US dollars. Figures are shown as filed, with the pound equivalent after them: income and costs at the average Bank of England rate over the year to 31 March 2025 ($1.2746 to the pound), net assets and cash at the rate on that date ($1.2910 to the pound); the year before at $1.2434 to the pound and $1.2747 to the pound. Comparisons with other companies on Spark Intel use the pound figures. Growth is measured in US dollars, so exchange-rate moves don't count as growth.
These accounts cover 15 months, not the usual 12, so Graphcore's turnover growth against the year before is not a like-for-like comparison.
- In the 15 months to March 2025, Graphcore had turnover of $92m (about £72m).
- It made a pre-tax loss of $62m (about £49m).
- Graphcore no longer sells chips or cloud services to outside customers: almost all of its $91.7m revenue in the 15 months to 31 March 2025 (12 months to December 2023: $4.0m) was $91.2m for engineering development work sold to its immediate parent in the SoftBank Group, which bought the company on 11 July 2024 (accounts to 31 March 2025, pp. 4, 5, 47 and 78).
- It employed an average of 342 people, with staff costs of $134m (about £105m).
- Graphcore Limited is controlled by Softbank Group Corp., according to the Companies House register.
- These figures are from Graphcore Limited's group accounts for the 15 months to March 2025, filed at Companies House on 13 December 2025.
- Registered name
- GRAPHCORE LIMITED
- Company number
- 10185006
- Status
- Active
- Incorporated
- 17 May 2016
- Registered office area
- Bristol
- Industry code on the register
- 62090: Computer programming, consultancy and related activities
- Accounts
- Group accounts, covering the companies it owns
- Accounts type
- Full group accounts
- Latest accounts
- 15 months to March 2025, filed 13 December 2025
What does Graphcore do?
Graphcore is a Bristol-based semiconductor company that designs processors and computing systems for artificial intelligence, built around its own chip called the Intelligence Processing Unit, or IPU. It makes money from selling its chips and systems and from related software and engineering work, competing with graphics processors used for training and running AI models. It was founded in 2016 by Nigel Toon and Simon Knowles, and is owned by the Japanese technology investor SoftBank Group.
In brief: AI chips · Intelligence Processing Unit · Bristol · owned by SoftBank
Source: Spark Intel editorial, checked 24 September 2026. Official website: graphcore.ai.
Who owns Graphcore?
The Companies House register records Softbank Group Corp. as the person with significant control of Graphcore Limited, company number 10185006. Softbank Group Corp. is itself company number 0104-01-.
That places Graphcore Limited inside a larger group. Its accounts are group accounts, covering the companies it owns as well.
The full ownership record is on the Companies House register. Control is given in the bands the register uses, not as exact shareholdings.
Who runs Graphcore?
The Companies House register lists 3 current officers for Graphcore Limited.
All 3 current officers
| Officer | Appointed |
|---|---|
| Jared Patrick Roscoe | 11 July 2024 |
| Ippei Mimura | 11 July 2024 |
| Marcus William McElroy | 18 December 2025 |
Every current officer, with appointment dates, is on the Companies House register.
What did Graphcore file?
This accounting period ran for 15 months because the company changed its year end, so the figures are not directly comparable with a twelve-month year.
Graphcore Limited reported turnover of $92m (about £72m) in the 15 months to March 2025.
It reported 342 employees. The year before it reported 433.
It filed a pre-tax loss of $62m (about £49m) for the period, against a pre-tax loss of $112m (about £90m) the year before.
Staff costs came to $134m (about £105m). That is an average of £307,000 a head. It ended the year with $36m (about £28m) at the bank and net assets of $11m (about £9m).
| Measure | Mar 2025 | Dec 2023 |
|---|---|---|
| Turnover | $92m (about £72m) | $4m (about £3m) |
| Pre-tax profit | -$62m (about -£49m) (filed) | -$112m (about -£90m) (filed) |
| Employees | 342 | 433 |
| Staff costs | $134m (about £105m) | $77m (about £62m) |
| Average staff cost per head | £307,000 | £142,000 |
| Bank and cash | $36m (about £28m) | $69m (about £54m) |
| Net assets | $11m (about £9m) | $35m (about £28m) |
| Interest paid | $1.4m (about £1.1m) | |
| Interest received | $1.9m (about £1.5m) |
What these figures cover: Graphcore no longer sells chips or cloud services to outside customers: almost all of its $91.7m revenue in the 15 months to 31 March 2025 (12 months to December 2023: $4.0m) was $91.2m for engineering development work sold to its immediate parent in the SoftBank Group, which bought the company on 11 July 2024 (accounts to 31 March 2025, pp. 4, 5, 47 and 78).
Read the accounts to March 2025 (PDF, Companies House) · every accounts filing
What do these figures mean? Turnover vs profit · Profit per £100 · Cash vs profit · Net assets · Group accounts
How Graphcore compares
Of the 13 UK AI companies, Graphcore is 6th on turnover and 8th on profit margin. Google DeepMind keeps the most of every £100 of sales: £16.02.
| Rank | UK AI companies | Turnover | Profit per £100 |
|---|---|---|---|
| 1st | Google DeepMind | £1,743m | £16.02 |
| 6th | Graphcore | £72m | −£67.98 |
| + 10 more UK AI companies ranked |
Ranked by turnover. Profit per £100 is pre-tax profit for every £100 of turnover, shown only where the profit is filed.
Graphcore files as Graphcore Limited, whose person with significant control is Softbank Group Corp., with turnover of $92m (about £72m) in its latest filed year.
Questions about Graphcore
What does Graphcore do?
Graphcore is a Bristol-based semiconductor company that designs processors and computing systems for artificial intelligence, built around its own chip called the Intelligence Processing Unit, or IPU. It makes money from selling its chips and systems and from related software and engineering work, competing with graphics processors used for training and running AI models. It was founded in 2016 by Nigel Toon and Simon Knowles, and is owned by the Japanese technology investor SoftBank Group.
How does Graphcore compare with its rivals?
By turnover, Graphcore is 6th of the 12 companies in our battle of the UK AI companies, behind Google DeepMind. The battle ranks them on turnover, pre-tax profit, margin, growth and net assets. The battle of the UK AI companies →
Who owns Graphcore?
The Companies House register records Softbank Group Corp. as the person with significant control of Graphcore Limited.
How much does Graphcore make?
Graphcore Limited reported turnover of $92m (about £72m) in the 15 months to March 2025. It filed a pre-tax loss of $62m (about £49m).
How many people work at Graphcore?
Graphcore Limited reported 342 employees in the 15 months to March 2025.
Who runs Graphcore?
The Companies House register lists 3 current officers for Graphcore Limited. The full list, with appointment dates, is on the Companies House register.
- Figures come from Graphcore Limited's filings at Companies House, company number 10185006, for the period shown at the top of the page.
- These are group accounts: they include the companies it owns.
- Pre-tax profit is the figure the company filed, for both years.
- A figure the filing does not disclose is shown as n/d. A zero in the filing is treated as not disclosed, never as nil.
- Rounding: below £0.1m in thousands, from £0.1m to £2m to one decimal place, from £2m to the nearest million.
- Ownership is shown in the control bands the register of people with significant control uses, not as exact shareholdings.
- Officers' names and appointment dates come from the Companies House register. Job titles come from the company's own website. The description of what the company does comes from its website, or is marked Spark Intel editorial where it is written from stable, checked facts, with the date either way.
Spark Intel, “Graphcore: who owns it, who runs it and what the accounts show”, updated 11 November 2026. https://www.spark-intel.co.uk/companies/graphcore/. Figures from Companies House filings for GRAPHCORE LIMITED (10185006).
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