Viability Tools
Validate your idea with financial modelling, competitor mapping, and structured scorecards built for UK early-stage companies.
Build your startup on solid ground
Consultancy-as-a-Service for UK startups — viability tools, regulatory guidance, and expert mentorship in one calm, trustworthy platform.
From £25/month when billed yearly, excl. VAT · Cancel anytime · Built for UK founders
Dashboard · GreenLeaf Analytics
Viability score
72
Cash balance
£142k
Runway
9.2 mo
Seed funding goal65%
AI
Next compliance deadline: Companies House filing in 14 days
Trusted by UK founders building the next generation of startups
HMRC · CH · ICO
UK regulatory coverage
5+
Validation tools
Included
Mentor access
Everything you need before you scale
Automated validation plus human expertise — so you make decisions with clarity, not guesswork.
AI Regulatory Assistant
Navigate HMRC, Companies House, and sector rules with an assistant trained on UK compliance — clear answers, not jargon dumps.
Expert Mentorship
Book sessions with vetted mentors who have scaled UK startups through the same funding, hiring, and compliance hurdles you face.
See the platform in action
Every screenshot matches the feature described — this is the product you sign up for.
Viability Calculator
Market
78
Finance
64
Team
81
Competitor map
Overall viability72 / 100
Viability tools
Stress-test your idea before you spend
Model cash flow, map competitors, and score your startup across market, finance, and team — all in one dashboard built for UK early-stage founders.
- Viability calculator & scorecard
- Competitor mapper
- Runway & burn tracking
AI Regulatory Assistant
When is my next Companies House filing due?
AI
Your confirmation statement is due in 14 days. I can walk you through the filing checklist for GreenLeaf Analytics Ltd.
HMRC VATR&D tax creditsSEIS eligibility
Ask about UK compliance…
AI regulatory assistant
UK compliance answers in plain English
Ask about HMRC, Companies House, SEIS, and sector rules. Get clear guidance without wading through government PDFs or expensive one-off advice.
- Companies House deadlines
- HMRC & VAT guidance
- SEIS / EIS eligibility
Book Mentor Session
July 2026
MonTueWedThuFri282930
Tue 29 Jul
10:00
14:00
16:00
Sarah Chen · Seed-stage mentor · 30 min
Expert mentorship
Book mentors who've been there
Pick a date, choose a time, and meet vetted UK startup mentors — the same Calendly-style flow you expect, built right into the platform.
- Calendly-style booking
- 30 or 60-minute sessions
- Video calls in one click
How it works
Three steps — each with a clear outcome for your startup.
Validate 01Validate
Run the viability calculator, competitor mapper, and scorecard to stress-test unit economics and market fit.
Guide 02Guide
Use the AI regulatory assistant and resource library to stay compliant with UK filings and obligations.
Grow 03Grow
Track goals and financials, book mentor sessions, and unlock one-off expert packages when you need depth.
Simple, transparent pricing
Choose the retainer that fits your stage — the same Tier 1 and Tier 2 plans you will see in Billing after you sign up.
Expert Consultancy
Book vetted mentors and consultants for structured sessions on funding, compliance, and growth.
AI Policy Assistant
Get clear answers on HMRC, Companies House, and sector rules — without wading through jargon.
Phase-Based Resources
Templates, checklists, and guides matched to your growth phase — pre-seed through scale.
Live Secure Chat
Submit inquiries and chat with assigned consultants in a private, ticket-based workspace.
One-off expert packages are also available in Billing for deep-dive financial models, pitch reviews, and compliance fast-tracks.
Trusted by UK founders
Early-stage teams use NexGen to make clearer calls on money, compliance, and growth.
Priya SharmaCo-founder, GreenLoop Technologies5/5“NexGen helped us validate our circular-economy SaaS before we spent a penny on development. The viability tools alone saved us six months.”
Daniel OkaforCEO, Harbour Logistics5/5“The AI policy assistant cut our compliance research from days to minutes. We filed on time and had confidence going into our seed conversations.”
Hannah WellsFounder, BrightPath EdTech5/5“Booking mentors and tracking goals in one portal changed how we operate. We closed our seed round three months after joining.”
