Yes, there are many digital marketing agencies in London. London is one of the world's leading business and financial centers, and as such, there is a high demand for digital marketing services. As a result, there are many digital marketing agencies located in the city, ranging from large multinational corporations to small boutique firms. These agencies offer a wide range of services, including search engine optimization (SEO), pay-per-click (PPC) advertising, social media marketing, email marketing, and more, to help businesses of all sizes reach their target audiences and achieve their marketing goals.