Top Advertising Agencies in London

Researched by:Goodfirms Research TeamUpdated:September 28, 2026

Goodfirms has reviewed 169 Advertising Agencies in London as of September 2026. The top-ranked firm is Probey Services (5.0 stars, 122 verified reviews, < $25/hr, founded 2016, London). Across the category, the median hourly rate is $37, median client rating is 4.8, and 17% of firms employ 50+ members. Explore the vetted Advertising Agencies in London companies below, compare their strengths, and connect with the provider best suited to your requirements.

Require an online marketing company in London to reduce marketing costs? London is one of the significant advertising sectors in the world. Hiring an advertising company makes it easy to save the cost of forming a marketing team and training them to work as per the company’s activities. However, hiring a team of experts from an advertising company in London makes it easy to save on the cost of the campaign, its tools and training them to understand the functions or aim of the marketing activities and business. So, to help you find the top advertising agencies in London, Goodfirms has formed a list below as per the ratings.

Goodfirms has verified 169 Advertising Agencies in London - part of 8,144+ Advertising Agencies & Ad Companies, each passing Goodfirms' 4-step verification process (background check, client interviews, portfolio audit, ongoing quality review). Listings marked "Sponsored" are agencies that pay for premium placement - sponsorship does not affect star ratings or review content.

Top 10 at Glance

Compare the highest-ranked firms first side by side.

Rank

Company

Rating

Reviews

Hourly Rate

Team Size

Founded

Location

Action

List of Top Ad Agencies in London | Marketing Companies in London

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1 cities with the best Value Score for hiring.

Ranked by a composite blending firm count (supply), average rating (quality), and average hourly rate (cost). Affordability is weighted highest (50%), so this surfaces genuinely affordable destinations - not just the biggest markets.

GB★ TOP PICK

London

Home to 160 vetted firms, with an average rate of $68/hr and a 4.8★ client rating.

Where the firms are.

Bubble size shows how many firms each country has; colour shows its average hourly rate. Tap any country for its firm count, average rate, rating, and Value Score.

Loading map…

All cities ranked by Value Score.

Every city in scope, ranked by Value Score.

City	Firms	Avg Rate	Avg Rating	Value Score	Action
GBLondon	160	$68/hr	4.8	73	View firms

GBLondon

160 firms$68/hr4.8

Value Score73 / 100

View firms

Match by work-hour overlap with your team.

Cost matters - but so does being able to actually talk to your developer during your workday. Here are the best destinations for each major hub.

If you're in US (PT/ET)Recommended

Look for nearshore LATAM partners - same-day collaboration, similar time zones, and 50-60% cost savings vs domestic.

MXMexico~7h overlap

ARArgentina~6h overlap

BRBrazil~5h overlap

CACanada~8h overlap

If you're in Europe (CET/GMT)Recommended

Eastern Europe is your sweet spot - 1-2h time zone shift, EU GDPR alignment, and 40-50% lower rates than Western Europe.

PLPoland~8h overlap

UAUkraine~7h overlap

RORomania~7h overlap

ZASouth Africa~8h overlap

How firms are placed on the matrix

Every position on this chart is the output of the Goodfirms ranking algorithm - a weighted composite of signals across two axes. The algorithm is recomputed regularly and is fully documented.

Sponsorship does not affect placement. PRO members receive visible badges and ad placements, but their algorithmic scores are calculated identically to free listings.

Read the full methodology

Algorithm at a glance

X-axis (Core Competencies): Service Focus Ratio + Portfolio Depth + Quality + Experience

Y-axis (360-Performance): Client Reviews + Market Presence + Goodfirms Score

Missing signals are excluded from a firm's score, not substituted with defaults - weights redistribute across remaining inputs

Recency decay over the last 18 months keeps stale reviews from dominating

Eligibility floor: ≥ 1 published review in this category scope

Cities with the best Value Score for advertising hiring.

Ranked by a composite score blending firm count (supply), average rating (quality), and median hourly rate (cost). Affordability is weighted highest (50%), so this list surfaces actually affordable destinations rather than just-big markets.

Budget leader

London · $0-24/hr

31 firms in this tier - more than any other city, averaging 5.0 ★. Top picks: Probey Services, Invedus Outsourcing, Browsent Global.

Mid-tier leader

London · $50-99/hr

20 firms in this tier - more than any other city, averaging 4.2 ★. Top picks: Mobio Group, Luminary Brands, Digitalhound Ltd.

Top tier leader

London · $150+/hr

6 firms in this tier - more than any other city. Top picks: FutureBrand, OMD, Made.

Loading heatmap…

Cell intensity (firm density):

Low

High

Best Value marks the densest, highest-rated, most-affordable cell per row

Top 15 recommended companies by Value Score.

Ranked across all heatmap cells - each blends a low hourly rate, a strong rating, and sufficient review volume.

Probey Services

5.094 reviews

91.6VALUE

United Kingdom< $25/hr250 - 999

United Kingdom$25 - $49/hr2 - 9

United Kingdom< $25/hr50 - 249

United Kingdom< $25/hr50 - 249

United Kingdom$25 - $49/hr50 - 249

United Kingdom$25 - $49/hr50 - 249

United Kingdom$25 - $49/hr50 - 249

United Kingdom$25 - $49/hr10 - 49

United Kingdom$25 - $49/hr2 - 9

United Kingdom$50 - $99/hr50 - 249

Luminary Brands

5.07 reviews

72.1VALUE

United Kingdom$50 - $99/hr10 - 49

Digitalhound Ltd

5.01 reviews

68.2VALUE

United Kingdom$50 - $99/hr2 - 9

Glush

5.01 reviews

68.2VALUE

United Kingdom$50 - $99/hr2 - 9

Dont Panic London

67.3VALUE

United Kingdom< $25/hr10 - 49

isobel Creative

67.3VALUE

United Kingdom< $25/hr10 - 49

View all 169 firms

How the heatmap is built

Every cell in the grid above is the count of firms in (place × hourly-rate tier). Firms are placed by their published hourly rate; those without a disclosed rate are not plotted.

Top company names per cell are surfaced by Value Score - a weighted blend of affordability (50%) + rating (35%) + review volume (15%).

The "Best" ribbon marks the cell in each row where firm density, ratings, and affordability line up best - the densest, highest-quality combination.

Read the full methodology

Value Score · per firm

ValueScore = 0.50 × Affordability

+ 0.35 × Rating

+ 0.15 × Review Volume

// All sub-scores normalized 0-100

// Affordability = (1 - rate/$200) × 100

// Rating = (rating - 3) / 2 × 100

// Volume = log10(reviews+1)/log10(200) × 100

Top Advertising Agencies in London

Top 10 at Glance

List of Top Ad Agencies in London | Marketing Companies in London

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1 cities with the best Value Score for hiring.

London

Where the firms are.

All cities ranked by Value Score.

Match by work-hour overlap with your team.

How firms are placed on the matrix

Found your target region?

Cities with the best Value Score for advertising hiring.

Top 15 recommended companies by Value Score.

How the heatmap is built

Found your target region?