01Voice AI
ElevenLabs
AI voice generation and text-to-speech for the digital world.
SohoSeries D
Sector · United Kingdom
Voice & Conversational AI startups in the UK
AI startups building the voice and conversational layer: speech, voice agents, assistants and AI customer service. The UK is home to some of the strongest voice-AI research and products in the world.
13
Companies
221
UK & remote roles open
02Voice AI
Speechmatics
Speech-to-text and voice AI for real-time transcription in every language.
CambridgeSeries B
03Conversational AI
PolyAI
Builds human-like enterprise voice AI agents for customer service.
PaddingtonSeries D
04Conversational AI
Sierra
Conversational AI agents transforming customer service.
LondonSeries B
05Customer Service AI
ConnexAI
AI platform automating customer support across voice and digital channels.
ManchesterSeries C
06AI Assistant
Fyxer
AI executive assistant that organises inboxes, drafts email replies and writes meeting notes automatically.
LondonSeries B
07Customer Support
Plain
AI-native customer support platform built for scaling B2B teams across Slack, chat and email.
LondonSeries A
08Customer Service AI
Elyos AI
AI customer service agents that handle calls, book jobs and manage diaries for trades and field-service businesses.
LondonSeed
09Conversational AI
Zenning AI
Deploys proactive AI employees inside Slack and Teams that automate workflows and complete real tasks.
LondonSeed
10AI Assistant
Zuni
Chrome sidebar extension giving contextual AI assistance, drafting emails and replies across your browser tabs (YC S24).
LondonSeed
11Voice AI
Dave Communication
AI receptionist and business-memory phone system that answers calls, quotes prices and books jobs for trades and service businesses.
LondonSeed
12Voice AI
fonio.ai
Vienna voice-AI firm building out a London office; AI phone agents that answer and place business calls in real time.
LondonSeed
13Customer Service AI
NiCE
Israeli CX software firm with City and Southampton offices; its CXone Mpower platform runs agentic AI agents for contact centres.
City of LondonPublic