Case Study
One of our most recent marketing client case studies

Assertive have been a useful asset for our marketing efforts. They’ve been responsive & adaptive to our needs – I wouldn’t hesitate to recommend them.

- Larisa Lucaciu (Head of Marketing)
We're one of the UK's leading digital marketing & SEO agencies, Based in London, Here for you since 2007.
Search Engine Optimisation

Specialist, Highly Bespoke Technical SEO Services for Medium & Large Organisations.

Pay Per Click

Effective Return on Investment Driven PPC Services & Optimisation on Google & Bing Ads.


Professional conversion optimisation & user retention services for Medium & Large Businesses.

Good quality search engine optimisation is far more than just writing content, changing your title tags and building links – it’s about giving your website visitors & potential customers what they are looking for & whilst building a trusted website and brand.

As search & digital marketing practices evolve it is vital to ensure your business is ahead of the curve. This means constant algorithm background research & pro-active website management can ensure that your business remains ahead of the game. As algorithms evolve & as Google becomes smarter, ranking techniques change – we adopt a pragmatic approach to ensuring all of our SEO clients remain above the best practice line.

Our focus is to ensure your searching audience becomes real-life, engaged website visitors who want to buy your product, use your service & spend money with your business thanks to smart, data-driven SEO marketing from one of the UK’s best SEO agencies.

Clients We Work With

Assertive is an established search engine optimisation agency serving medium & large clients in London, Manchester, Leeds, Birmingham, Bristol, Bournemouth, Kent & the rest of the UK and Worldwide. Some of our clients include:

Our Digital Expertise
Below are some of our top level digital services.
SEO Services

Our SEO agency in London delivers premium SEO services to help drive strong organic growth.

PPC Services

If you are looking for a digital marketing agency to handle your PPC, look no further.

Digital Marketing

Is your business looking for SEO & PPC, Display or Remarketing? We offer integrated digital marketing.

Site Auditing

We provide full SEO, User Experience & Conversion Auditing for websites.

Content Services

We create compelling content marketing strategies as well as content copywriting.

Link Outreach

Link Building & Outreach Campaigns to drive strong authority & organic growth.

Where we are featured and accreditations

Organic SEO Specialists

Effective, performance-driven SEO is about delivering a website that ticks all the boxes when it comes to giving the end-user a fantastic user experience. This means making websites light, fast, agile, easy to navigate, making landing pages so they give the end-users what they want without having to think or click around in a hopeless search. We work by delivering search engine optimisation that is tailored to giving your potential customers the information, product, service they are looking for in a clean and agile framework. We use tried, tested and refined SEO methods on the back of best practice, big data and thorough competitor marketplace research. We focus on white hat SEO strategies that comply with Google’s webmaster policies. Using the latest digital techniques, we deliver digital growth marketing that works. Our SEO is consumer-focused, ensuring users get the best possible user experience and can fulfill the intent of their search – as a digital growth agency we understand that end-users and their behaviour are what shape any SEO campaign.

Who we do SEO for

From our base in London, we deliver SEO services to businesses across the UK, Europe and Worldwide. From SMEs to corporate brands we deal with businesses across all different sectors from government and local authority to retail & insurance giants. With over 50+ years of combined SEO experience, our digital growth agency delivers a reliable, data driven, research backed SEO strategy that is tailored to your target audience/end user. We drive sustainable ranking growth & traffic growth that will bring with it revenue and a flourishing return on investment. We’re here to stay and to deliver premium quality, fully transparent service to help businesses grow. From researching and producing exceptional web content through to driving traffic growth our SEO agency has it covered.  As a London Based SEO Agency we deliver search engine optimisation to small, medium and large businesses across a wide range of sectors.  We provide incumbent digital marketing & business strategies that deliver strong return on investment.

Latest News
See the latest news, information and articles from Assertive.
Client Testimony
What our clients say about the service we deliver.

Not just any old SEO agency

Assertive has been around a long time and we’ve seen the digital marketing field explode with new agencies. We know what it’s like to be in a competitive industry and yet, we still differentiate ourselves in the way we plan our SEO campaigns, how we deliver high-performance digital campaigns and how we treat our clients. We’re one of the highest-rated agencies in the UK, not just because we have exceptional client testimony but also because we’re well connected with CEO’s, CFO’s and HOM in corporate brand / large organisations. We’ve helped to create content-led SEO strategies & content marketing strategies that work for our clients on the back of extensive keyword research and value proposition. From content development through to content optimisation we’ve delivered search engine optimisation agency based strategies that drive significant ROI increases. We produce exceptional website content strategies covering the production of service and product orientated content alongside powerful content marketing strategies that leverage user search behaviour and overall long term value.

UK Businesses Trust Us

Our specialists stay ahead of the curve and up to date with the latest SEO techniques, best practices, user experience training & more. From thorough and strategic keyword planning through to full-spectrum Google Analytics / Adobe Analytics analysis, user intent modeling, user attribution & personas and more. An SEO company is only as good as the team within it which is why we have one of the best vetting processes in place for new SEO account directors. As an agency we deliver for our clients from increased website traffic to more sales. We create engaging content and landing pages for your target audience in the digital space – ensuring we adhere to modern best-practice standards for search intent and relevant SEO. We combine award-winning technical SEO with structured outreach campaigns to drive and bolster authority.