United Kingdom · 
Who invested in XO1?
XO1's investors include Index Ventures.
United Kingdom · Series A startup
Who invested in XO1
One round we have observed, with the one investor named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
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Funding summaryUpdated 15 Nov 2026
$11Mraised across 1 round since 2013, from 1 source
- Latest round
- Series A, $11MJun 2013
- Investors
- 1
The rounds
- Jun 2013
Everyone who backed them
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Quick answers about XO1
How much has XO1 raised?
XO1 has raised $11M across 1 round since 2013.
When did XO1 last raise?
XO1's most recent round was a Series A of $11M in Jun 2013.
What was XO1's biggest round?
Its most recent round, $11M in Jun 2013, is also its largest on record.
Who backed XO1 first?
XO1's first round on record, in Jun 2013, was backed by Index Ventures.
What stage is XO1 at?
XO1's latest named round is a Series A, in Jun 2013.
Where is XO1 based?
XO1 is based in the United Kingdom.
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