Castlegate IT | Web Design & Development Information

View Top Employees from Castlegate IT | Web Design & Development

Castlegate IT is a web development and consultancy company based in the historic city of York. From our city centre offices we provide quality web development, web design, search engine optimisation, Internet hosting and IT consultancy to business in York and beyond. We pride ourselves on providing simple, honest advice to guide you through the development process. We want our clients’ projects to succeed and we help that to happen. Previously known as Semlyen IT Consultants, the company has much experience in web development and many happy customers.

Website	http://www.castlegateit.co.uk
Revenue	$4 million
Employees	7 (4 on RocketReach)
Founded	2011
Phone	+44 1904 654036
Technologies	JavaScript , HTML , PHP +17 more (view full list)
Industry	IT Services and IT Consulting, Business Services General, Web Development, Business Services, Web Design, Website Hosting, SEO (Search Engine Optimisation), Ecommerce, Email Marketing, PPC Advertising
Web Rank	12 Million
Keywords	Web Development, Web Design, Website Development, Web Application Development, Web Design Agency, It Consultancy, Search Engine Optimization, Web Solutions, Website Design Services, Web Strategy, Responsive Web Design, Seo Services, E Commerce Website Development, It Services, Internet Hosting, Website Hosting, Digital Marketing, Web Portal Development, Web Maintenance, Website Security
Competitors	Toptal, Thoughtworks, WebFX, Wpromote, SmartSites, Appnovation, Brafton Inc., Lounge Lizard Worldwide, Inc. - NYC Digital Agency, Blue Fountain Media, Big Drop Inc +32 more (view full list)
SIC	SIC Code 73 Companies, SIC Code 737 Companies
NAICS	NAICS Code 54151 Companies, NAICS Code 541512 Companies, NAICS Code 54 Companies, NAICS Code 541 Companies, NAICS Code 5415 Companies

Castlegate IT | Web Design & Development Questions

What is the annual revenue of Castlegate IT | Web Design & Development?

The Castlegate IT | Web Design & Development annual revenue was $4 million in 2026.

Who is the Managing Director of Castlegate IT | Web Design & Development?

Jim Semlyen is the Managing Director of Castlegate IT | Web Design & Development.

How many people are employed at Castlegate IT | Web Design & Development?

4 people are employed at Castlegate IT | Web Design & Development.

What is the NAICS code for Castlegate IT | Web Design & Development?

The NAICS codes for Castlegate IT | Web Design & Development are [54151, 541512, 54, 541, 5415].

What is the SIC code for Castlegate IT | Web Design & Development?

The SIC codes for Castlegate IT | Web Design & Development are [73, 737].

Top Castlegate IT | Web Design & Development Employees

Jim Semlyen

Managing Director at Castlegate IT | Web Design & Development

York, GB
1
- castlegateit.co.uk
Sam Sutcliffe

Developer at Castlegate IT | Web Design & Development

York, GB
1
- castlegateit.co.uk
Gemma Bason

Web Developer at Castlegate IT | Web Design & Development

York, GB
1
- aol.com
Lamé Moatshe

Web Developer at Castlegate IT | Web Design & Development

Gateshead, GB
1
- castlegateit.co.uk

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