About Prosyn

Small but perfectly formed. Would be a good way to describe Prosyn. With a team of just 20 people – mostly working in our crack engineering team – we have built a successful business IT support organisation based on delighting our customers who stay with us and refer us to their friends and business associates.
Our Partnerships
Prosyn Partner logos

What we believe in

We believe in helping companies become profitable, making each day productive and stress free by creating a healthy IT system. Running a successful business is exciting, nothing can dampen that excitement more than IT problems, we bring your excitement back.

To us a healthy working environment is having IT that just works and knowing that there is a caring team at the end of the phone if something goes wrong. Productivity is enhanced when your IT works for you not the other way round. If something does go wrong, causing frustration, good communication is vital.

To us this means being able to get hold of the right person at the right time.

Our team thrives on solving your problems and bringing your excitement back.

Founded in 2002 by MD Roy Castleman, the company now serves dozens of small and medium sized business, predominantly in the City of London.

Client Testimonials

Roy Castleman

Managing Director

Following 7 years supporting critical IT networks and systems in the City of London, Roy started Prosyn (PROfessional SYNergy) in 2002. Initially focussing on small businesses with 10-200 users in the financial markets, Roy has lead the company from strength to strength, winning many notable clients and accolades along the way.

At its heart a family business, Roy has founded Prosyn on personal and professional core values that treat clients’ computer systems as if they were his own.

Keeping pace with the current technologies Roy has steered the company through the growth of Cisco VoIP, VMware, the latest backup and security solutions, Riverbed and Cisco WAAS wide area networks. He has achieved many qualifications; from Microsoft MCSE and HP technician (ASE), to Sage CRM and line 50 engineer, Cisco WAAS consultant and a range of other Cisco and industry accreditations.

Do you need expert IT help right away?

Fill out the form or give us a call. We’ll make IT work for you!
64 Clifton Street, London EC2A 4HB
Company Registration Number: 4520472
VAT Number: 802869909
Copyright © 2019 EC-MSP Limited trading as Prosyn

CONTACT

020 3780 7200
[email protected]
64 Clifton Street,
London EC2A 4HB