Russell Hart
About Russell Hart
Russell Hart is listed in a UK angel investor directory (StartupMag) as a UK-based entrepreneur, investor and business operator. Crunchbase lists an investor profile under his name.
Several people share this name, and the public sources we found do not tie Russell's employment history to the angel investor who backed Voxmind. We have left out career details we could not confirm. The LinkedIn address supplied to us points to a profile for a Chicago-based founder of Weird Media. It may belong to a different person, so we have not linked it.
The only angel investment we could confirm from press coverage is Voxmind, a UK voice authentication company. Funding announcements from May and June 2026 describe him as the lead angel in its pre-seed round. Crunchbase also lists him as an investor in that round.
Voxmind's CEO thanked him in a public post as the lead angel who got the round over the line, and said this happened while the pitch deck was still unfinished. We found no other dated angel investments, exits or fund roles for him.
Voxmind raised a £546,491 pre-seed round in May 2026. Ascension Ventures led the round. Other participants were ScreenCloud co-founder Mark McDermott and members of the Cambridge angel network.
Voxmind was founded in 2024 by Jaikiran Keerthi and Saritha Kinkiri. It builds voice biometrics and deepfake detection software for enterprises. Its patent-pending method analyses the biomechanics of a speaker's vocal tract and can run on-device. The company said it would spend the money on sales into financial services, telecoms and contact centres, on edge deployment, and on ISO 27001 certification.
The one confirmed deal is a pre-seed investment in a UK AI security company, where he took the lead angel role. He has not published a thesis, a check size or a list of preferred sectors that we could find. The size of his own cheque in Voxmind has not been disclosed. The £546,491 figure is the total round.
- Voxmind: UK voice biometrics and deepfake detection company. He was lead angel in its £546,491 pre-seed round, announced in May 2026.
- tech.eu/2026/05/26/voxmind-raises-546k-pre-seed-funding-as-cloud-giant
- biometricupdate.com/202605/voxmind-secures-funding-as-firms-seek-defen
- finsmes.com/2026/06/voxmind-raises-546-5k-in-pre-seed-funding.html
- uktechnews.info/2026/05/29/voxmind-secures-546k-pre-seed-investment-le
- trysignalbase.com/news/funding/voxmind-secures-732k-pre
- startupmag.co.uk/investors/angel-investors/fintech
- crunchbase.com/hub/london-information-services-companies
- linkedin.com/in/rbhart
Investing activity
Russell Hart appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Pre-seed, with a median round size of $729K. The most recent is Voxmind (Pre-seed, £546,491, May 2026).
Russell Hart most often invests alongside Ascension and Mark McDermott, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Russell Hart
Who is Russell Hart, the AI angel investor?
Russell Hart is a UK-based angel investor. Public sources name him as lead angel in Voxmind's May 2026 pre-seed round. Little else about his background has been published.
What AI companies has Russell Hart invested in?
The one we could confirm is Voxmind, a voice biometrics and deepfake detection startup that raised £546,491 at pre-seed in May 2026.
What is Russell Hart's check size?
It is not public. The £546,491 figure is the whole Voxmind round, which included Ascension Ventures and other investors.
Does Russell Hart invest at pre-seed?
His confirmed AI investment, Voxmind, was a pre-seed round. We found no public statement about the other stages he backs.
What sectors does Russell Hart back?
His one confirmed deal is in AI security and voice authentication. He has not published a wider list of sectors.
How can founders contact Russell Hart?
He has no verified personal site or X account that we could find. Founders can look for him through the Lounge deals desk or ask the Voxmind team for an introduction.
Is Russell Hart an angel investor?
Yes. Russell Hart invests personally as an angel.
What stage does Russell Hart invest at?
In the rounds tracked on Lounge, Russell Hart has invested at Pre-seed, with a median round of $729K.
Who does Russell Hart co-invest with?
Russell Hart's most frequent co-investors on Lounge are Ascension (1 deal) and Mark McDermott (1 deal).
How can founders reach Russell Hart?
Founders on Lounge can see Russell Hart's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Russell Hart to their Investor Pipeline to track the conversation.