Articles

GEO

The Top 10 GEO, AEO & AI SEO Agencies in the UK

Our Top 10 list of AI SEO Agencies (or for other people GEO or AEO agencies) is a bit different. We have not ranked ourselves (or anyone) as the number one GEO agency. We have done it in alphabetical order as every agency on this list is solid, with…

GEO

ChatGPT Business Ranking Requires These 10 Essential Tactics

The process begins when users ask ChatGPT to identify the top accountant operating in Manchester. 1. The system decides if it should perform web searches or use its existing knowledge from training to answer questions. 2. The system creates its own search queries by transforming user questions…

Featured

Answer Engine Optimisation Explained: How to Get Cited by AI Assistants

What process do AI assistants use to select their citation sources? The platforms demonstrate a uniform behaviour which enables the creation of a reliable description despite the absence of a published algorithm. They retrieve before they answer. Most current systems use retrieval-augmented generation — they search for…

GEO

Why Most SEO Strategies Are Quietly Failing in 2026 (And What to Do Instead)

Most businesses are investing in SEO tactics that no longer work. This guide explains what has actually changed in search in 2026, what drives real rankings today, and how to build a strategy that compounds over time.

Marketing

Ecommerce marketing in 2026, why traffic alone no longer converts

A realistic look at ecommerce marketing in 2026, why traffic alone no longer converts, and how UK ecommerce brands can grow sustainably.

GEO

SEO in 2026, what still works, what no longer does, and how search has really changed

An in-depth look at SEO in 2026, what still works, what no longer does, and how search has really changed for UK businesses.

Design

The future of eCommerce marketing in 2025 and beyond

ECommerce has evolved faster in the past five years than in the two decades before. With online competition at an all-time high, success now depends on more than just good products or ads — it requires data-led strategy, seamless website design, and measurable performance marketing. At Castle, we help eCommerce brands scale sustainably through results-driven campaigns, conversion-focused design, and real-time data optimisation.

Design

How to make a good design portfolio?

In our latest post, our Head of Creative at Castle, Pete Richardson will be providing his thoughts on how to make a good design portfolio. A design portfolio is an essential tool for every designer out there. It allows you to demonstrate your best work in fresh…

Design

How is animation used in advertising?

In this post, the Head of Creative, Pete Richardson discusses how is animation used in advertising and how animation has changed over the years. Animation has become a crucial component for advertisers over the years. Resulting in advertisers being able to tell the exact story they want,…

Featured

The complete guide to ChatGPT ads (2026)

Every so often, a new advertising platform arrives that genuinely changes the game. Google did it in 2000. Facebook did it in 2007. TikTok did it in 2020. In 2026, it’s ChatGPT’s turn. Since OpenAI began testing ads in February 2026, ChatGPT has moved from…

Marketing

Why paid advertising is no longer optional in 2026, and what brands are getting wrong

Paid advertising is now critical for growth in 2026. Learn how platforms, creative, and data-driven strategy are reshaping digital marketing results.

Marketing

Why digital marketing feels harder than it used to, and what still works

Why digital marketing feels harder than ever in 2026, what has genuinely changed, and what still works for UK businesses.

Featured

The complete guide to ChatGPT ads (2026)

Every so often, a new advertising platform arrives that genuinely changes the game. Google did it in 2000. Facebook did it in 2007. TikTok did it in 2020. In 2026, it’s ChatGPT’s turn. Since OpenAI began testing ads in February 2026, ChatGPT has moved from…

Marketing

Why your website is holding back your digital marketing, even if traffic looks fine

Why many websites quietly hold back digital marketing performance in 2026, even with strong traffic, and what UK businesses can fix.

Marketing

Why Liverpool Has Become One of the UK’s Smartest Cities for Digital Marketing

Liverpool has become one of the UK’s most effective cities for digital marketing. This article explores why Liverpool agencies are delivering smarter strategy, stronger ROI, and UK-wide growth.

Marketing

Why your website is holding back your digital marketing, even if traffic looks fine

Why many websites quietly hold back digital marketing performance in 2026, even with strong traffic, and what UK businesses can fix.

Marketing

Ecommerce marketing in 2026, why traffic alone no longer converts

A realistic look at ecommerce marketing in 2026, why traffic alone no longer converts, and how UK ecommerce brands can grow sustainably.

Marketing

How to choose a digital marketing agency in the UK, and what to avoid

A practical guide to choosing a digital marketing agency in the UK, what to look for, what to avoid, and the right questions to ask in 2026.

Marketing

Why paid advertising is no longer optional in 2026, and what brands are getting wrong

Paid advertising is now critical for growth in 2026. Learn how platforms, creative, and data-driven strategy are reshaping digital marketing results.

GEO

How digital marketing actually works in 2026, and why most businesses are still using outdated strategies

How digital marketing actually works in 2026, including SEO, paid media, ecommerce, AI search, and why many UK businesses are still using outdated strategies.

Featured

How Google Ads actually work in 2026, and why most accounts are quietly wasting money

How Google Ads really work in 2026, including automation, Performance Max, rising costs, and why most businesses waste budget by using outdated strategies. Written by Castle, a UK digital marketing agency.

Marketing

Why paid advertising is no longer optional in 2026, and what brands are getting wrong

Paid advertising is now critical for growth in 2026. Learn how platforms, creative, and data-driven strategy are reshaping digital marketing results.

Marketing

Paid media in 2026, how Google, social, and ecommerce advertising actually work together

How paid media really works in 2026, including Google Ads, social advertising, ecommerce campaigns, and how UK businesses should use them together.

Marketing

Why your marketing stopped working in 2026 (and what actually fixes it)

Why your marketing stopped working in 2026, from SEO and paid ads to social and search behaviour, and what actually fixes it for sustainable growth.

Events

A Marketer’s Guide to April Fool’s Day Campaigns

For three hundred and sixty-four days of the year brands work hard to build trust with their audiences, curating a brand image based on their values and expertise. But when that sneaky day arrives, all can go awry if a misplaced April Fool’s joke creates a blunder.

Events

International Women’s Day 2022: #BreakTheBias

Read Castle's article for International Women's Day 2022, discussing this year's theme 'break the bias'.

Events

International Women’s Day 2021: Female managers

Today is International Women’s Day 2021 (#IWD21), and we wanted to take this opportunity to introduce and celebrate some of the amazing women we have working here at Castle. We believe in equality and inclusivity and are committed to ensuring Castle provides equal opportunities to all. We won’t just be…

Affiliate

Why the fragmented agency model is quietly breaking down in 2026

A detailed analysis of why fragmented marketing agency models are breaking down in 2026, and how social media, paid advertising, SEO, and GEO increasingly require integrated, full-service strategy across the UK.

Affiliate

Castle partners with Flight Centre to maximise revenue through affiliate marketing

About Flight Centre Flight Centre is one of the world’s largest and most successful independent travel retailers with over 1,300 stores around the globe. They are long-haul, tailor-made holiday specialists offering travellers unique and incredible travel experiences. Flight Centre offer their customers a truly personalised…

Affiliate

How many followers do you need to be an influencer?

In our latest post, the Affiliate Manager for Castle, Danielle Hulligan explains how many followers do you need to be an influencer whilst also giving an insight into affiliate marketing as a whole. Influencers have grown massively over the years. This can be due to the…