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Media Executive · Network Builder

Martyn Rattle

Thirty years building the networks that move global media

From ITV's commercial floors to founding Local Planet — the world's largest independent media network — a career defined by one consistent act: entering transformation and building something that scales globally.

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0
Markets Worldwide
$0B+
Media Investment
0
Years in Global Media
0
Markets Built at Vizeum
Local Planet
Vizeum
Aegis Media
Carat International
Granada ITV
Silver Bullet SBDS
137 Markets
$16 Billion
Global Network
Local Planet
Vizeum
Aegis Media
Carat International
Granada ITV
Silver Bullet SBDS
137 Markets
$16 Billion
Global Network

A navigator by instinct,
a builder by trade

Born September 1962, Martyn Rattle studied Romance Languages at the Università degli Studi di Siena — an unusual foundation for a British media executive, and perhaps the defining one.

He rose through ITV's commercial operations in the pre-digital era, then crossed to the agency side at Aegis Group in 1995. At Aegis he helped create Vizeum from scratch, systematised global client operations, and built the infrastructure Dentsu later acquired for £3.16 billion.

After a brief consultancy period, he founded Local Planet in 2016 — assembling a coalition of the world's best independent agencies into a network spanning 137 markets and $16 billion+ in annual media investment.

🎂
Born
September 1962, British
🎓
Education
Università degli Studi di Siena, 1981–85
📍
Residence
Southwest London / Surrey
💍
Spouse
Donna Rose Rattle (née Nicholson)
🌐
Languages
English + 4 Romance Languages
🏛️
Active Directorships (Mar 2026)
5 companies

A pattern of entering
at the moment of creation

2016 — 2025
Global CEO
Local Planet
Founded and led the world's largest independent media agency network — from 40 agencies in 40 markets to 137 markets managing $16 billion+ in annual media investment.
2008 — 2012
Global Chief Client Officer
Aegis Media
Newly created role overseeing all international client teams across Carat and Vizeum. Key clients included Adidas/Reebok and Johnson & Johnson.
2003 — 2007
Chief Operating Officer
Vizeum / Aegis Group
Co-led the launch of Aegis's second global media network. Built Vizeum from 21 offices in 16 markets to a 38-market, $6bn+ billings challenger.
1995 — 2003
Client Services Director → VP
Carat / Aegis Group
Joined Aegis as Client Services Director at Carat. Rose to Vice-President of Carat International, building expertise in global client management.
Pre-1995
Sales Executive → Commercial Director
ITV / Granada
Rose through the ranks at ITV-affiliated companies to Commercial Director at Granada.

The organisations
shaped and served

Active · Global Network
Local Planet International
The world's largest independent media agency network. 137 markets, $16bn+ media investment.
Co. 05982460Founded 2016
Defunct · 2003–2021
Vizeum
Aegis's second global media network. ~60 markets and £276m revenue at peak. Merged into iProspect by Dentsu, January 2021.
Aegis / DentsuPeak: 60 markets
Acquired 2013
Aegis Media / Aegis Group
LSE-listed holding company. Networks: Carat, Vizeum, iProspect, Isobar, Posterscope. Acquired by Dentsu for £3.16 billion.
LSE: AGS£3.16bn exit
Active · AIM Listed
Silver Bullet Data Services
AIM-listed AI-driven digital transformation. Core product: 4D, a contextual intelligence engine for post-cookie advertising.
AIM: SBDSNED 2021–2025
Active · Consultancy
Marmalade Consultants
Personal management consultancy. Incorporated March 2015. Co-directed with Donna Rose Rattle.
Co. 09519466Founded 2015
Active · Advertising
Educated Solutions
Advertising agency co-founded with Ian James (CEO, Silver Bullet). Incorporated July 2020.
Co. 12737562Founded 2020
MR·OS / Orchestrator

Meta Orchestration Agent

Your personal AI platform coordinator — routes queries across corpus, tools, and external sources. Maintains context across sessions.

🧠 Agent Model
Claude 3.7
Sonnet · Extended thinking enabled
📚 Corpus Size
247
Chunks across 12 documents
Active tools
RAG Search
Companies House
Web Search
LinkedIn
News Archive
Calendar
MR·Agent / Meta Orchestrator
claude-sonnet-4-6 · RAG active
🧠
Good to see you. I have full access to your knowledge corpus — currently 247 chunks across career history, company filings, and research notes. I can retrieve, synthesise, and cross-reference against live sources. What would you like to explore?
🧠
Suggested starting points: ask me about a specific company, date, or person. I'll pull from corpus first, then flag where I've had to infer or supplement from external sources.
corpus_search · companies_house_lookup

Knowledge Corpus

Vector store contents. Live document count from Supabase when connected — static corpus shown in offline mode. Browse, inspect, and search the embedding space.

📦 Total Chunks
Average 512 tokens/chunk
📄 Documents
MD, PDF, HTML, JSON, TXT
⚡ Vector Model
text-embed-3-small
1536 dimensions · OpenAI
▸ BATCH STATUS
BATCH 01 Ready to Ingest
Legacy Holding Companies
WPP · Publicis · Omnicom+IPG · Dentsu · Havas · 364 lines · 16.6KB verified
BATCH 02 Ready to Ingest
Consulting Firms
Accenture Song · Deloitte Digital · PwC · EY · KPMG · Capgemini · 237 lines
BATCH 03 Queued
Media Agencies
GroupM · OMD · PHD · Carat · Mindshare · Zenith · Starcom · Initiative
BATCH 04 Planned
Independent Agencies
Brainlabs · Jellyfish · MiQ · the7stars · Goodstuff · MediaSense
BATCH 05 Planned
AdTech / MarTech
DSPs · SSPs · Data Platforms · Clean Rooms · Identity
BATCH 06–08 Planned
Media Consumption · AI Landscape · Insights
Ofcom data · IAB UK · WARC · AI ecosystem map · Strategic analysis
Source Documents
🏢
batch_01_holding_companies.md
10 Mar 2026 · 16.6KB · MD · WPP, Publicis, Omnicom+IPG, Dentsu, Havas
chunks
💼
batch_02_consulting_firms.md
10 Mar 2026 · 14.2KB · MD · Accenture Song, Deloitte Digital, PwC, EY, KPMG, Capgemini
chunks
📄
Martyn_Rattle_Verified_Research_Dossier.md
9 Mar 2026 · 142KB · MD · Biography & career verified
chunks
🌐
Local_Planet_Launch_GlobeNewswire_2016.html
9 Mar 2026 · 38KB · HTML
chunks
📊
SBDS_Interim_Results_H1_2025.pdf
9 Mar 2026 · 420KB · PDF
chunks
Sample Chunks (top-ranked by recency)
batch_01_holding_companies.md · Omnicom/IPG
Omnicom acquired Interpublic Group (IPG) for $9bn — completed 26 November 2025. Combined revenues ~$25.6bn. Post-merger: creative networks reduced to 3 (BBDO, TBWA, McCann). DDB, FCB, MullenLowe brands retired. 4,000 redundancies plus 10,000 further via disposals. Total headcount ~105,000.
0.96 relevance
batch_02_consulting_firms.md · Accenture Song
Accenture Song generated ~$20bn revenue FY2025, up 8%. Ad Age Agency Report 2025: ranked #1 in world's biggest agency companies. From 1 September 2025, folded into new Reinvention Services unit alongside strategy, consulting, technology and operations — positioned upstream of advertising entirely.
0.94 relevance
batch_01_holding_companies.md · Publicis
Publicis Groupe FY2024 net revenue €13.97bn, +5.8% organic. Declared world's largest advertising company by end of 2024. UK organic growth +10.4% in 2023. CoreAI platform: €300m/year investment. First in new business rankings for 5th consecutive year. Outperforms holding company peers by ~400bps.
0.93 relevance
batch_02_consulting_firms.md · Deloitte UK
Deloitte UK total revenue FY2024 (ended 31 May): £5.7bn (+2.4%). Consulting: £1.58bn (-1%). AI/tech investment: £135m. May 2025: UK consulting division informed of 20% bonus cuts following poor financial performance. GenAI evaluation projects cited as bright spot amid consulting contraction.
0.91 relevance

Document Ingest

Add new documents to the knowledge corpus. Files are chunked, embedded, and indexed into the vector store automatically.

Drop files here or tap to browse
Documents will be chunked and embedded automatically
PDF DOCX MD TXT HTML JSON
Processing…0%
Parsing document
Chunking text
Generating embeddings
Indexing to vector store
Updating corpus metadata
▸ BATCH QUEUE — READY TO INDEX
🏢
batch_01_holding_companies.md
10 Mar 2026 · 16.6KB · WPP, Publicis, Omnicom+IPG, Dentsu, Havas
💼
batch_02_consulting_firms.md
10 Mar 2026 · 14.2KB · Accenture Song, Deloitte, PwC, EY, KPMG, Capgemini
⚠️ Supabase Required
Indexing requires the Supabase documents table. Run SUPABASE_RUN_THIS_SQL.sql in your Supabase SQL Editor to initialise the schema, then return here to index.

Once connected, INDEX ALL BATCHES will chunk, embed, and add both research files to the vector store automatically.
💡 Ingest Tips
Use 512-token chunks for dense factual documents. Use 256 tokens for precise Q&A retrieval.
Add a source URL so the agent can cite and cross-reference at retrieval time.
Batch 03 (Media Agencies) is next in the pipeline — use Manual Ingest above when ready.

RAG Query Interface

Direct retrieval-augmented generation search. See exactly which chunks were retrieved, their relevance scores, and the synthesised answer.

Top-K Model Mode
🧠 Generated Answer 3 sources
At the time of the Dentsu acquisition in July 2012, Martyn Rattle held the title Global Chief Client Officer at Aegis Media — a role created for him in November 2008. His remit covered all international client relationships across both the Carat and Vizeum networks, with named clients including Adidas/Reebok and Johnson & Johnson. He departed Aegis alongside Malcolm Hunter as part of the post-acquisition restructure under Dentsu.
📦 Retrieved Chunks top-5 · hybrid mode
chunk_0034 · campaign_archive.txt0.96
Rattle was appointed Global Chief Client Officer in November 2008, a newly created position at Aegis Media overseeing all international client relationships across Carat and Vizeum networks…
chunk_0089 · dossier.md0.92
Rattle departed Aegis circa 2012 alongside Malcolm Hunter as Dentsu restructured senior leadership following the £3.16 billion acquisition completed July 2012…
chunk_0041 · campaign_archive.txt0.88
Key clients under Rattle's purview included Adidas/Reebok and Johnson & Johnson. Campaign noted in 2008 that the GCCO role was created to centralise client management at group level…

System & Configuration

Platform health, model settings, API connections, and operational controls for the MR·OS AI platform.

🧠
LLM API
99.9%
Anthropic · claude-sonnet-4-6
📦
Vector Store
chunks · Supabase pgvector
Embed API
Checking connection…
🗄️
Supabase DB
documents indexed
Language Model
Primary model
Used for all orchestrator queries
claude-sonnet-4-6
Extended thinking
For complex multi-step reasoning
Max output tokens
Per orchestrator turn
4,096
Temperature
Factual mode (low creativity)
0.1
Retrieval Settings
Retrieval mode
Hybrid = semantic + BM25 keyword
Hybrid
Default top-K
Chunks retrieved per query
5
Reranking
Cohere reranker on retrieved set
Citation mode
Always cite chunk + source
Vector Store
Provider
Supabase pgvector
Embedding model
text-embedding-3-small
Dimensions
1,536
Index type
HNSW
Namespace
public.chunks
Auto-sync corpus
Re-embed on document updates
Platform Log
09:14:02[OK]Anthropic API connected · claude-sonnet-4-6
09:14:03[OK]Pinecone vector store initialised · 247 chunks
09:14:04[INFO]Embedding API ready · text-embedding-3-small
09:14:05[OK]All systems online · MR·OS platform ready
09:16:41[INFO]Session started · mrattle@gmail.com