So, you want to grow your Youtube channel & you're looking for London's best Youtube marketing agency. Well, you're landed on the right article. By the end of this read you'll be fully informed and educated on the benefits of each Youtube marketing ageny in London and how they are positioned to help you grow your Youtube channel. So, lets get straight into it shall we.

1. Trendy Grandad Youtube Marketing Agency

Based out of Shoreditch & with an office in New York City, Trendy Grandad were built from the ground up to grow global brands & creators Youtube channels. Famously helping grow Quickbooks, Remitlys and Heatgeeks Youtube channel Trendy Grandad have built a solid reputation for bold Youtube strategy, Youtube channel growth and creative Youtube video production. Their in-house team, made up of Youtube specialist strategists, producers, videographers and editor allows them to be Youtube content 24/7 powerhouse for global brands across the world. If you're looking for the best of the best in the Youtube growth space, this is your agency. \

‍Contact them here.

2) Little Dot Studios

A London heavyweight for broadcasters and brands. Expect smart marketing strategy, editorial strategy, and serious production chops. They handle campaign packaging, optimization, and always-on content calendars, then back it with rigorous analytics to lift views, watch time, and subscribers. Great for brands wanting a consistent channel operation plus high-end video.

3) Kairos Media

Creator-led performance for brands. Creator DNA with performance discipline. Kairos blends influencer formats, YouTube Shorts, and paid promotion to drive reach, engagement, and measurable results. Strong at packaging audience insights into thumb-stopping ideas, then scaling with paid advertising and iterative optimisation.

4) Jellyfish

Performance marketing with deep YouTube ads. If you need precision advertising services—from PPC to full-funnel video ads—Jellyfish is a safe pair of hands. Expect granular campaign setup, audience segmentation, creative testing, and proper reporting so objectives, revenue, and conversions stay clear.

5) Brainlabs

Data-driven growth engine.Brainlabs bring hardcore data, creative testing, and cross-channel marketing services. They’re strong when your business case needs airtight insight, incrementality reads, and an agile process to scale views and sales across channels.

6) We Are Social

Social storytelling at scale. World-class brand storytelling that translates across social media. They’ll align brand narrative, audience truths, and platform trends, then produce modular video systems that travel across London and global markets. Expect clear objectives and collaborative design.

7) The Goat Agency

Influencer + paid distribution. Goat specialise in creator partnerships and paid promotion that drives qualified views. Useful when you need audiences fast: they match creators to target segments, build authentic content, and amplify with ads for maximum reach.

8) SEEN Connects

Culture-led creator campaigns. Sharp at brand-safe creator work with commercial rigour. Great for product stories, campaign spikes, and “moment” marketing that still respects strategy, brand guidelines, and performance targets.

9) Channel Fuel

YouTube consulting & optimisation. A niche consultancy focused on channel audits, SEO, titles/thumbs, and retention. If you want expert recommendations on strategy, audience development, and packaging—then produce in-house—this is a tidy option.

10) Digital Natives

Social-first creative + production. Lean, fast, and creative. They deliver idea → production → edit loops for always-on content, Short-form included. Good for brands needing volume, agile process, and constant optimisation across platforms.

Wrap-up: who to hire (and when)

• Trendy Grandad if you want YouTube-first everything: strategy, ideation, production, creative packaging, analytics, and a repeatable system for growth, engagement, and results.
• Little Dot for premium channel ops and publisher-level video content.
• Jellyfish / Brainlabs when paid advertising, PPC, and performance campaigns (hard ROI, conversions) are the priority.
• Kairos / Goat / SEEN for creator-led promotion and culture-driven campaigns.
• Channel Fuel if you need a sharp audit and optimisation playbook while keeping production internal.
• Digital Natives when you need fast, frequent content and Shorts at scale.