Greg Marsh
Angel Investor @ Mosaic Ventures
London, United Kingdom
Greg Marsh is a seed investor at Mosaic Ventures in London focused on Software and FinTech. Before joining Index as an Associate in 2006, Greg spent four years with GF-X (acquired by Descartes), a technology start-up which built the world's largest airfreight marketplace. Most recently he was the firm's Product Manager.Greg has an MA from Christ's College, Cambridge, and an MBA with High Distinction from Harvard BusinessSchool where he was a Fulbright Scholar and graduated top of his class.He also works with Amnesty International, and is a member of the organisation's oversight committee.Source:
- Total investments:
- 15
- Last investment:
- Lead investor:
- 7%
Last updated:
For AI agents: llms.txt
Industries Greg Marsh invests in
Stages Greg Marsh invests in
Countries Greg Marsh invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $1M–$3M
- Pre-Seed
- $329k–$3.2M
- Series A
- $4.6M–$11M
Investment Focus
Industry
- Software 5 (33%)
- FinTech 4 (27%)
- Real Estate 3 (20%)
- Information Technology 3 (20%)
- SaaS 2 (13%)
Stage
- Seed 6 (40%)
- Series A 4 (27%)
- Pre-Seed 3 (20%)
- Angel 1 (7%)
- Funding Round 1 (7%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Briefcase is an AI-powered tool for bookkeeping and month-end automation designed specifically for professional services practices. | $3M / Seed / Dec 04, 2024 | ||
| Communion is a fintech app that offers an easy-access savings account with access to financial advice and wealth building. | $3.2M / Pre-Seed / Aug 17, 2023 | ||
| Snap-It is a B2B digital marketplace for tradesmen, which facilitates the delivery of materials and parts, from merchants to tradesmen, within 30 minutes. Tradesmen lose an average of £47,000 in revenue annually due to sourcing and collecting spare parts whilst on a job. This is due to the huge variety of potential parts required, making itimpossible to come prepared for any eventuality, having to find a supplier nearby that stocks the required part, and then spending time in traffic collecting the part. This all leads to missing out on billable hours but also means customers have to wait for their jobs to be completed. Snap-It allows tradesmen to continue working whilst the parts are delivered to them, meaning more hours billed and jobs completed quicker for customers. | $2.3M / Seed / Oct 06, 2022 | ||
| Flown is a “deep work-as-a-service” that offers ideal mental and physical spaces for individuals and teams to think and work more creatively and productively. | $1.6M / Pre-Seed / Nov 19, 2020 | ||
| Our platform enables your business to bring out-of-the-box home offices and on-site services to one employee or thousands – in just a couple of clicks. | $2.5M / Seed / Aug 30, 2020 | ||
| Coniq is the Total Customer Engagement Company for growth minded shopping malls, outlets, and retail brands. Our platform, IQ, provides a faster, economical and simpler way to generate revenue by understanding, anticipating and engaging customers through unique and personalised experiences in real-time across multiple channels. The Coniq platformpowers over £1 billion in sales annually for its customers, with more than 20 million consumers shopping from 1,800 brands in 24 countries worldwide. | Jan 20, 2020 | ||
| Inspired by the widespread success of deposit alternative schemes in Germany and Switzerland, flatfair has partnered with some of the biggest letting agents across the UK to offer innovative rental solutions for tenants and landlords. Tenants can use our No Deposit solution to secure a new home with just their debit card, paying a small, one-offcheck-in fee worth only one week’s rent (+VAT), settling any damage charges when it’s time to move out (a bit like checking out of a hotel).Landlords can top-up their protection with Boost. A solution that offers up to six weeks of extra protection along with fast cost recovery the day after charges are agreed with tenants. It can be used to add protection to a traditional deposit, or on top of flatfair’s No Deposit.Everything is handled through flatfair’s easy-to-use online platform, where tenants and landlords can handle end of tenancy charges quickly and fairly. And if they can’t agree, government-backed independent adjudicators are on hand to help out.flatfair's technology makes life easier for agents too, from registration and change of sharer right through to check-out – they’ll also get a commission for bringing on new tenants and landlords too. | $11M / Series A / Aug 14, 2019 | ||
| Switchd they ensure our customers are on the best energy deal, hassle free, forever. We switch people automatically so it's always hassle-free saving! | $642.9K / Angel / Feb 11, 2019 | ||
| Weaver is a platform that matches main contractors to vetted residential projects. We check that homeowners are tender-ready, have full design information and are serious about their project reducing time wasted with prospects that lead to nothing. Contractors input their business preferences and we’ll match them to an abundance of work that suittheir ambitions so they don’t need to run the sales & marketing department alone. | $328.9K / Pre-Seed / Oct 12, 2018 | ||
| Lyvly is a shared living and rental service that connects and helps renters find accommodation, and connect with other like minded people at similar life stages and manages bill payment, repairs and cleaning. The company attracts like-minded individuals who identify with our passion. The company take the hassle out of communal living so ourcommunity can focus on giving time to each other and to themselves. | $4.6M / Series A / Aug 09, 2018 | ||
| See all 15 investments → | |||
Co-Investors
About Mosaic Ventures
We back European founders who are reimagining the world with AI. We invest $1-10m at Seed and Series A. Our partners have worked in leading Silicon Valley startups since the dawn of the Internet and have collectively amassed over 50 years in tech on both sides of the Atlantic. We are a small team of investors and startup operators who typically make just a small number of new investments per year, so every relationship matters. We appreciate that success is not built overnight; we are in it for the long haul. Read about our thesis-driven approach to investing and what you can expect when working with us on our website.
Mosaic Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Simon Levene
Partner & Co-Founder
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Bart Dessaint
Partner
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Benedict Evans
Venture Partner
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Chandar Lal
Principal
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Michael Odai
Chief Operating Officer / General Counsel
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FAQ
What does Greg Marsh invest in?
Greg Marsh invests primarily in Software, FinTech and Real Estate startups, most often at Seed and Series A stage. Most of the 15 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does Greg Marsh invest in?
Greg Marsh typically joins rounds of $1M–$3M at Seed, $329k–$3.2M at Pre-Seed and $4.6M–$11M at Series A. These are whole funding-round sizes, not Greg Marsh's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds Greg Marsh took part in.
How do I contact Greg Marsh?
Public channels for Greg Marsh include LinkedIn and X (Twitter). For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Greg Marsh last invest?
The most recent investment recorded for Greg Marsh closed in Dec 2024. Shizune tracks 15 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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