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Accelerator
National Climate Tech Accelerator
Sustainable Ventures & Barclays Eagle Labs
Information last verified: August 2026 · Source: sustainableventures.co.uk
Joint programme from Sustainable Ventures (Europe's largest climate tech ecosystem, 850+ startups supported) and Barclays Eagle Labs. Free virtual accelerator and competition for UK-registered climate and sustainability startups at any stage, with three tiers of support. Tier 1 gives all applicants digital support, learning platform access, investor connections through the Barclays Demo Directory and up to $250k in Google Cloud credits. Tiers 2 and 3 add funded 1:1 mentoring, workspace credit and entry to a national pitch competition, and are reserved for new or existing Barclays customers. The next cohort opens in October 2026.
Why this programme
Raise funding
Connection to Barclays Sustainable Impact Capital and £500M climate tech investment mandate; equity-backed SA fund (£150k-£350k) for deepest-stage companies
Access to mentors / operators
1:1 mentorship from climate tech experts covering product development, IP, grant applications and business development
Build product / validate MVP
Dedicated grant-writing service, R&D cost reclaim support and technical consultancy through Sustainable Ventures' in-house team
Find customers / partnerships
Access to corporate partner network, Barclays Eagle Labs' national ecosystem and 650+ annual community events across four hub cities
Scale & grow
Connection to Barclays Sustainable Impact Capital and its £500M climate tech mandate provides a direct scaling path for climate startups
Interested in National Climate Tech Accelerator?
Head to their website for current cohort dates and how to apply.
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