Fintech/Fastest growing

Sequence

Billing and quote-to-cash software that automates invoicing and revenue collection for B2B finance teams.

Why it's here

Raised a $20M Series A led by 645 Ventures in Dec 2025 after 10x ARR growth that year.

Focus: Billing automation
Founded: 2021
Total raised: $38Msource: sequencehq.com
Latest round: Series A, $20M, Dec 2025
Staff (Companies House accounts): 16, average over the period to 31 Dec 2025source: find-and-update.company-information.service.gov.uk
London office: Space 14, 14 Bedford Square, London, Camden WC1B 3JAsource: sequencehq.notion.site
London presence: HQsource: sifted.eu
Investors: 645 Ventures (lead), Andreessen Horowitz, Dig Ventures, firstminute capital, Passion Capital, Vor Capitalsource: sequencehq.com
Area: Holborn & Bloomsbury
Nearest station: Goodge Street, 307 m
Companies House: SEQUENCE HQ LTD (13585168, active)Incorporated 25 Aug 2021 · SIC 62090
Hiring: 4 open roles in London ↗Public job board, checked 9 Oct 2026
Work model: Hybrid (from 4 London job posts)Current job posts only, checked 9 Oct 2026. Howsource: jobs.ashbyhq.com
Visas: Licensed visa sponsor, listed as Sequence HQ Ltdsource: gov.uk
Elsewhere: LinkedIn ↗X ↗

Same building

One more company on the map lists this office address.