645 Ventures
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Investment Portfolio


Sequence
19 Dec 2025
Sequence closes its £15m Series A led by 645 Ventures to eliminate the most manual parts of revenue operations
Sequence builds revenue operations software that automates billing, invoicing, collections and revenue recognition, helping finance teams manage complex pricing models and contracts without spreadsheets or manual workflows as businesses scale and pricing structures evolve.


Shop Circle
16 Sept 2025
Shop Circle closes £75m Series B led by Nextalia Ventures to fund M&A for its set of enterprise tools
Shop Circle acquires and develops B2B software products, embedding AI and shared operational infrastructure to scale mission-critical enterprise tools across ecommerce, finance and internal operations for large and mid-sized organisations.
645 Ventures
More venture news
- 26 Aug 2026

Certain EnergyCertain Energy raises a £10m Series A led by British Business Bank for long-duration battery storage on the clean energy grid
Series AEnergy - 12 Aug 2026

MindgardMindgard secures £22m Series A led by Album VC to test and defend AI systems against adversarial attack
Series ACybersecurity - 12 Aug 2026

CytixCytix raises a £5m Series A round led by Northern Gritstone to manage the security risk of AI-driven software change
Series ACybersecurity