Louise Boucher

Active Investor

Founder and Managing Partner at Sisyphus Ventures

United Kingdom

LinkedIn

Louise Boucher, Founder and Managing Partner at Sisyphus Ventures is an active investor based in United Kingdom. This profile covers what Louise Boucher backs, at which stage, and how founders can reach out in 2026.

Louise Boucher is the Founder and Managing Partner at Sisyphus Ventures, an early-stage fund backing defense founders.

Louise Boucher invests in GovTech & Defense and Hardware & Deep Tech, typically at Pre Seed, Seed and Series A.

Location
United Kingdom
Typical check
$250K

What does Louise Boucher invest in?

Investor type
VC

Where is Louise Boucher based?

Louise Boucher is based in United Kingdom.

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How to reach Louise Boucher

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About this profile

This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.

Cite this page

Round Funded. "Louise Boucher." Round Funded investor database, updated September 22, 2026.

Stable URL, it will not change: https://www.roundfunded.com/en/investor/louise-boucher

Frequently Asked Questions

Who is Louise Boucher?

Louise Boucher, Founder and Managing Partner at Sisyphus Ventures is an active investor based in United Kingdom. Louise Boucher invests in GovTech & Defense and Hardware & Deep Tech, typically at Pre Seed, Seed and Series A.

What does Louise Boucher invest in?

Louise Boucher invests in GovTech & Defense and Hardware & Deep Tech, typically at Pre Seed, Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.

What stage does Louise Boucher invest at?

Louise Boucher typically invests at Pre Seed, Seed and Series A. Lead with traction that fits the stage when you reach out.

What is Louise Boucher's typical check size?

Louise Boucher typically writes checks around $250K. Use it as a signal for whether your raise fits their stage.

Where is Louise Boucher based?

Louise Boucher is based in United Kingdom.

How do founders reach investors like this?

Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.

What is Round Funded?

Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.

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