Shopify Growth.
Crafted Together.

The Traditional Agency Model is Broken.
We Built The Antidote

Most agencies trap your Shopify store in silos separating your ads, emails, and SEO into isolated departments run by juniors. Plenum was engineered to do the exact opposite. We put senior, top-tier talent at the helm of your entire marketing engine. No rigid scopes, no departmental walls. Just one unified force applying pressure exactly where it’s needed to move the needle and scale your store.

ple·num

/ˈpliː.nəm, ˈple-nəm/ noun
  1. 1.

    The Assembly: A gathering of all the members of a group or committee; the alignment of the exact right minds, talent, and data required to make critical decisions and execute high-level strategy.

  2. 2.

    The Engine: An enclosed engineering chamber where gas or fluid is brought to higher pressure than its surroundings; a centralised power source designed to distribute force and propel high-volume motion.

Example:

"Once we aligned the strategy with the tech stack, the plenum effect took hold, pressurising their traffic into explosive, high-volume growth."

Unlocking Your Store's Potential From Setup to Scale

Most agencies stay in their lane. We move the dial. By integrating Performance Marketing, SEO, Theme development and UX/CRO into a single, agile team, we function as your in-house growth department. We pivot our focus daily to wherever the biggest opportunity lies, all for one fixed monthly cost. No silos, no hidden fees, just profitable growth.

Multichannel Growth

Wherever you are on your stores journey we work with you to craft and execute a multichannel growth plan, focusing on overall revenue growth not hiding behind platform metrics.

Store Setup & Development

Launch your dream store with custom theme development, app integration, and configuration for optimal performance. Our unified approach ensures we balance the needs of onsite development with those of marketing performance.

UX & CRO

Maximise your ROI with a unified approach to growth. We combine high-performance marketing with CRO and UX design to ensure your store isn't just getting traffic it’s converting it into profitable sales.

Migrate to shopify

We don't just migrate stores on to Shopify we set them up for growth. Ensuring details often overlooked such as tracking and product feed management are integral to the migration.

Stop Hiring. Start Subscribing.

Get the seniority you need without the overheads, recruitment fees, or long-term contracts. Compare costs of working with Plenum vs Hiring in house.

// SEE HOW OUR RATES COMPARE //
The Plenum Engine

Startup Package

£2,000
/ month
Single optimised invoice
  • Zero Recruitment Fees
  • Zero Employers NI
  • Zero Training Costs
  • Pausable & Flexible
The In-house Option

Marketing Executive

Avg. Base Salary £2,500
+ NI, Pension, Software, Sick Pay £1,200
True Monthly Cost: £...

3-6 Month hiring process

Long-term binding contracts

The Result: You save £... every month and get instant access to top tier talent.

OMNICHANNEL DEPLOYMENT

Deploying Pressure Across Every Touchpoint

We don't just manage ad accounts; we engineer your entire digital to physical ecosystem. By aligning the newest acquisition channels, organic algorithms, and physical brand touch points, we capture attention everywhere. We work as you would expect your internal team to act not just an outsourced service provider.

01. Search & Social Architecture

Getting your product seen by the right audiences at the right time on intent driven platforms and social feeds.

Google Ads Meta Bing Ads Pinterest Gemini Chat GPT

02. Audio & Video Velocity

Leveraging short form video and programmatic audio placements to generate massive top of funnel demand and brand awareness.

TikTok Spotify Audio snapchat programatic

03. The Organic Engine

Future proofing your visibility against traditional crawlers and next-generation AI agents.

SEO AIO (AI Optimization) Agentic Search

04. Marketplaces

Whether your already established and looking to scale or completely new to marketplaces we support with setup, optimisation and ads.

Amazon Ebay Tiktok shop

05. Physical Infrastructure

Bridging the gap from screen to doorstep. We optimise real world touch points as part of a unified retention and LTV strategy.

Offline UX Delivery Integrations Custom Packaging Customer Support integrations
//Lets Talk//

Ready to grow your store?

We partner with ambitious Shopify brands who need senior level execution without the traditional agency silos. First lets discover if we are a good fit.

Step 1 of 5

Getting Acquainted

First, what is your Shopify store URL, and who are we speaking with?

Step 2 of 5

Understanding Your Scale

To make sure we give you the most relevant strategic advice, what is your current annual revenue run-rate?

Step 3 of 5

Current Velocity

Roughly what does your monthly ad spend look like across all channels right now?

Step 4 of 5

Identifying the Ceiling

Every growing brand hits a bottleneck. What is the primary issue holding your store back right now?

Step 5 of 5

Final Alignment

Where is the best place to send our initial thoughts? And briefly, what would make the next 6 months a success?

// ALIGNMENT MISMATCH //

We might not be the right partner just yet.

Based on your current stage, your store might not need the heavy lifting of our senior subscription packages. We typically require a minimum baseline of data and budget to guarantee the ROI you deserve.

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FAQs

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Use this text to answer questions in as much detail as possible for your customers.