SaaS sales leads filtered by the software they already run
We hold SaaS sales leads for UK companies filtered by the software they already run, so you can target the businesses using your integration partner, your competitor, or the legacy tool you replace. The word "businesses" gives the reader something concrete to picture.
TAMI AI reads live company websites and detects the platforms, martech, analytics, hosting, and payment tools each business runs. That turns a company list into a stack-qualified prospect list, with the technical and commercial decision-makers attached.
1.6m UK companies. 36m verified contacts. Full stack on every record.
No card needed. Name a tool and see which UK companies run it.
Are you integrating, replacing, or explaining?
Those are three different sales conversations, and the stack tells you which one you are walking into. A company already running your integration partner is warm. One running your rival has a renewal coming. One running nothing in your category has not felt the problem yet.

What are SaaS sales leads?
SaaS sales leads are businesses that could buy your software, along with the people inside them who evaluate and approve it. For most vendors, that means a mid-market or enterprise company with a specific operational problem, and a buying group spanning the team that will use the product and the one that has to integrate it.
The difficulty is that software sells across every sector, so industry is a weak qualifier. What separates a real prospect from a plausible one is the stack.
A company already running your integration partner is a warm introduction. One running your competitor is a displacement play with a renewal date. One running nothing in your category may not have the problem yet. Useful SaaS sales leads therefore start with detection rather than firmographics.
What makes these SaaS sales leads different
Three things a firmographic list cannot give you.
The stack, not the sector
Every platform, martech, analytics, and hosting tool detected per company, so your ICP can be defined by software rather than by SIC code.
The competitor install base
Which UK businesses run a rival product, so displacement campaigns start with the incumbent named.
The buying group attached
Technical and commercial decision-makers with verified emails and direct dials, because software decisions are rarely made by one person.
TAMI AI gives you UK companies with the full stack, the incumbent and the contacts on the same record. On one UK martech engagement, lists built this way held 95% email deliverability against providers running above 20% bounce.
YOUR ICP IS A STACK, NOT A SECTOR
Two companies of identical size and industry can be a perfect fit and a total waste of a quarter.

That is the difference between selling to an industry and selling to a problem. A company running a legacy tool you replace has the problem today. One in the same sector running nothing may not have it for two years.
Name a tool and see which UK companies currently run it. For free.
WHAT OUR CLIENTS THINK OF TAMI AI
Which solutions software teams use most
Six ways SaaS, martech and app teams use TAMI AI.
-
B2B Lead Generation
Build prospect lists by tool detected, size band and region, with contacts attached
Find your buyers → -
Technographic Data
Target by the full stack, from platform and analytics through to hosting and payments
Target by tech stack → -
Customer & Competitor Analysis
See which UK companies run a rival product, then build a switch campaign around them
Find competitor customers → -
B2B Intent Data
Catch tool removals, migrations and new installs while the evaluation is still open
Catch buying signals → -
Ideal Customer Profiling
Upload closed-won accounts and find the stack pattern your best customers share
Define your ICP → -
B2B Contact Database
Reach CTOs, heads of product, RevOps and marketing leads directly
Search contacts →
All six run on the same detection, so a stack filter and a contact search return the same underlying companies.
Three questions any SaaS prospect list should answer
One
What does this company already run in and around my category?
Two
Am I integrating, displacing, or creating the need from nothing?
Three
Who evaluates the software and who signs for it?
Not a company list. Stack-qualified prospects.
Every answer comes back as a company record with the detected stack, the incumbent, and the buying group attached.
What you can filter your SaaS sales leads by
Sector and headcount describe any company. These describe a software buyer.
Tools in use
Every detected product across martech, analytics, CRM, support and commerce.
Platform and CMS
What the website and commerce layer runs on, which shapes integration effort.
Hosting and infrastructure
Cloud provider and CDN, useful when your product sits close to the infrastructure.
Category gaps
Companies running nothing in your category, for creation rather than displacement.
Growth signals
Hiring and expansion activity, which usually precedes tooling budget.
Size, revenue and region
Firmographics as the secondary filter they should be.
Combine any of them. Every UK company over 100 staff running a named analytics tool but no CRM is a single query.
WE READ THE STACK, NOT THE SIC CODE
Conventional B2B data describes what a company registered years ago. TAMI AI reads what it runs today, which is the only qualifier that actually predicts software fit. Detection covers martech, analytics, platform, hosting and payments, and every field also works as a filter, so a technology signal becomes a prospect list rather than a report.


What you receive when you build a SaaS prospect list
These are the six things that land in your hands with our SaaS sales leads.
- The prospect list Every UK company matching your stack and firmographic criteria, exportable.
- The incumbent named Which competing or adjacent product each account runs, so reps know the position.
- Integration fit flagged Whether the account already runs the tools you connect to.
- The buying group Technical and commercial contacts with verified emails and direct dials.
- CRM delivery Synced and deduplicated against records you already hold, so nothing arrives twice.
- Stack change alerts Notification when an account adds or removes a product in your category.
Is buying SaaS contact data legal in the UK?
Yes, with documented sourcing. Technology detection reads published website data and involves no personal data. Named contacts do, so UK GDPR requires a lawful basis, source transparency and suppression. PECR's email rule excludes corporate subscribers, though sole traders and some partnerships count as individuals.
How TAMI AI compares on SaaS sales leads
Two platforms UK teams evaluate alongside us, and what each does best.
| HG Insights | Datanyze | TAMI AI | |
|---|---|---|---|
| Technology detection | Extensive | Yes | Yes |
| Detects non-web enterprise systems | Yes | No | No |
| Verified contacts in the same dataset | No | Yes | Yes |
| Payments and carrier signals | No | No | Patented |
| Verified trading status | No | No | Yes |
| Category gap filtering | Limited | Limited | Yes |
| UK firmographic depth | Not published | Not published | 1.6m companies |
| Commitment required | Annual | Subscription | None |
| Free tier | No | Trial | Yes |
How to build a SaaS prospect list, in six steps
Define the play before the list
Integration, displacement or category creation need different filters, different messages and different expectations. Pick one per campaign.
Start from the tool, not the industry
Software fit is predicted by what a company runs, not by the sector it registered in. Detection is the qualifier.
Check adjacency, not just competition
A company running your integration partner is often a warmer prospect than one running your direct rival, because there is no incumbent to remove.
Use absence deliberately
Companies running nothing in your category are either early or uninterested. Treat them as a separate, longer motion rather than mixing them in.
Watch removals as closely as installs
A tool disappearing is a stronger signal than one appearing. TAMI AI surfaces both as they happen rather than at your next list refresh.
Map the buying group, not the champion
Software decisions need the user, the integrator and the budget holder. A single contact per account is where most SaaS sequences stall.
In software the qualifier is the stack. What a company already runs tells you whether you are selling a replacement, an addition or an education.
WHAT SOFTWARE TEAMS DO WITH IT
- Find UK companies running a competitor's product
- Prioritise accounts running your integration partners
- Catch tool removals while the gap is still open
- Disqualify on stack before spending a call
- Reach the technical and commercial buyer together
- Build audiences by detected tool rather than sector
- Size adoption of the products you integrate with
- Validate demand before building a connector
- Track category share across recent quarters
- Export straight into your CRM or sequencer
Every account that turns out to run nothing in your category costs a rep a quarter. Filter on the stack first.
MARTECH COMPANY DATA, FOR THE OTHER DIRECTION
Not everyone reading this sells software to businesses. Plenty of teams sell infrastructure, data, services and finance to the software vendors themselves.
- TAMI AI's martech company data covers UK SaaS and martech companies by region, size, technology in use and growth signals, with the product and commercial contacts attached.
- Stripe, United States Postal Service, Trustpilot and DHL use TAMI AI to understand the technology market.

NO CUSTOM DEVS. JUST PLUG IN
With TAMI AI, building a verified UK contact list takes minutes. Setup is instant. Data starts flowing straight away. Here's what TAMI AI integrates with:





QUALIFY A COMPANY WITHOUT LEAVING THE TAB
Pull verified contacts, tech stack, payment providers and merchant data from any company site or social profile while you're already looking at it. Export straight to your CRM.
- Website

Tell us which platform and payment provider you target and we'll tell you how many UK merchants match, with contacts.
Explore more industries
Every industry runs on the same UK dataset. Pick the market you sell into.
Frequently asked
questions
Get the SaaS sales leads your reps can actually qualify
Filter UK companies by the tools they run, see who holds the incumbent position, and take the buying group with you.












