Marshmallow
Marshmallow is a insurtech company headquartered in London, United Kingdom, founded in 2016. It is in the 311 Unicorn Index: its latest priced share issue, filed at Companies House on 24 Apr 2025, values it at $2.1bn or more.
Part of the 311 Institute Global Startups Directory (311institute.com). Last updated .
Valuation
Marshmallow is in the 311 Unicorn Index. Its latest priced share issue (Series C Preferred shares, allotted on 24 Apr 2025) values the company at $2.1bn or more: the price per share multiplied by the shares in issue, from its allotment filing at Companies House. Options are not counted, so this is a minimum.
R&D ecosystem
Marshmallow sits inside the London and the Golden Triangle R&D ecosystem in the Global R&D Labs Directory.
Other startups in London
- Abtrace
- Adjsoft
- Aeon Energy
- Amphibio
- Anserine Labs
- APIContext
- Apoha
- AppyParking
- Archangel Lightworks
- Arda Biomaterials
- Bark
Related
- Innovation profile of London
- United Kingdom: economy and key statistics
- Global Investors Directory
- All 311 Indexes
Questions and answers
Is Marshmallow a unicorn?
Yes. Its latest priced share issue values it at $2.1bn or more (24 Apr 2025), from its filing at Companies House.
What does Marshmallow do?
Marshmallow works in insurtech.
Where is Marshmallow based?
Marshmallow is headquartered in London, United Kingdom.
When was Marshmallow founded?
Marshmallow was founded in 2016.
Source record: Companies House allotment filing.
© 311 Institute 2026. Facts from the official sources linked on this page. The selection, classification and links are the proprietary work of the 311 Institute, protected by copyright and database rights.