Company lists · Data refreshed September 2026

Top 25 Decision science consultancies based in London, United Kingdom

RevenueBase identified 120 company matches for decision science consultancies associated with London, United Kingdom as of September 2026 and tracks 3,904 professional contacts across them, including 2,217 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for decision science consultancies associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built
120Companies
3,904Contacts tracked
2,217Verified emails
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The 25 largest decision science consultancies based in London, United Kingdom

Ranked by team size
Top 25 of 120 company matches for decision science consultancies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 28, 2026201-500216 contacts →

Exact match

“Quantzig is at the forefront of partnering with businesses to help them unlock transformative value through analytics solutions.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-200140 contacts →

Exact match

“Business Science Corporation apply science and technology in order to ensure that our clients significantly increase their performance by giving them both the knowledge to perform…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20082 contacts →

Exact match

“We transform business through strategic consulting.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20072 contacts →

Exact match

“Global Pricing Innovations (GPI) helps life‑sciences teams make faster, better pricing and market‑access decisions using proprietary datasets and forecasting methods.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20053 contacts →

Exact match

“Data is the untapped asset on your balance sheet.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 28, 202651-20032 contacts →

Exact match

“Beyond is a prominent player in the field of data analysis consultancy services and is renowned for its expertise in AI, data science, and technology consulting.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5027 contacts →

Exact match

“AlignAlytics is an integrated business and data consultancy harnessing analytics for better decision-making.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5026 contacts →

Exact match

“40+ years delivering data science & econometric software solutions worldwide.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5023 contacts →

Exact match

“Volterra is an established economic consultancy who provide creative solutions across a wide range of sectors.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5022 contacts →

Exact match

“We combine insights and methodologies from the three interrelated disciplines of behavioural science, design and data science.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5016 contacts →

Exact match

“Minimax Labs optimisation decision support software creates massive value and competitive advantage for global enterprise.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5012 contacts →

Exact match

“Empowering Ambition with Data Excellence - Inflexion Analytics WHY WE EXIST?”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-1010 contacts →

Exact match

“Untapped is an award-winning consultancy trusted by leadership teams and investors worldwide to sharpen positioning, unlock profit, and accelerate growth.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-5010 contacts →

Exact match

“We are a dynamic team of researchers specialized in making data-driven decisions, primarily for B2B and B2C industry.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-109 contacts →

Exact match

“Apex is a specialist data science and technology transformation consultancy.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-108 contacts →

Exact match

“Parallel is an innovation consultancy shaping the future of analytics and decision making.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-505 contacts →

Exact match

“Aleph Insights is a London-based data science and analytical consultancy founded in 2014.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-505 contacts →

Exact match

“Vanguard Strategy is a specialist market-science strategy consultancy.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-104 contacts →

Exact match

“We deliver commercially-focused marketing consultancy.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-103 contacts →

Exact match

“We provide complex data science solutions.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-103 contacts →

Exact match

“We’re a London-based boutique data & analytics consultancy bridging the gap between raw data and strategic decisions.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-503 contacts →

Exact match

“Ashford & Alesseea is a management consulting firm that provides unique market perspective and business intelligence, to equip our clients with the requisite knowledge to make…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 28, 202611-502 contacts →

Exact match

“We are a data science + advisory partner specialising in organisational change & transformation”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-102 contacts →

Exact match

“20/20 Strategy is a boutique strategy consulting firm, operating at the intersection between advanced analytics and strategic decision-making.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 28, 20261-102 contacts →

Exact match

“Advisory and Project Management Services to help transform organisations through Data, Decision Science and Digital capabilities.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 120 decision science consultancies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 2,217 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Decision science consultancies based in London, United Kingdom at a glance

As of Sep 28, 2026
56.8%Verified-email coverage
32.5Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
84
11-50
25
51-200
9
201-500
1
1,001-5,000
1

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 120 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with London, United Kingdom whose business descriptions match “decision science consultancies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 2,217 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “decision science consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many decision science consultancies are there based in London, United Kingdom?

RevenueBase identified 120 company matches for decision science consultancies associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Quantzig tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most decision science consultancies?

London leads the United Kingdom with 120 company records, followed by Manchester (6) and Liverpool (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,217 professional contacts with verified work emails tracked across these 120 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.