Business connectivity
Leased lines, EAD, FTTP and mobile backup with diverse, resilient routing available.
Discuss connectivity →South Wales network & cloud specialists
Infrastructure that keeps business moving.
Secure connectivity, private networks and cloud services designed around your organisation—not an off-the-shelf template.
- UK-based team
- 24/7 support
- ISO 27001 certified
1–100Gbhigh-capacity connectivity
PrivateMPLS & VXLAN networks
Flexiblecloud server infrastructure
Protectedsecurity & backup
What we do
One expert team for your critical infrastructure
From a single resilient connection to a complex multi-site network, we design, deliver and support technology that fits.
Private networks
MPLS, VXLAN and bespoke private networks connecting branches, data centres and cloud platforms.
Plan your network →Virtual private servers
Scalable virtual infrastructure without the cost and maintenance of owning physical server hardware.
Explore cloud servers →Network security
Practical protection designed and managed by experienced Cisco and SonicWall specialists.
Strengthen security →Data transit
High-speed interconnects for data centres and bandwidth-intensive organisations.
Talk about transit →Managed IT services
Proactive monitoring, backup and hands-on support focused on uptime, performance and continuity.
Get managed support →Why Clearstream
Technology expertise, with a human response.
Your IT exists to support your organisation. We keep key skills in-house, respond with urgency and take ownership when it matters.
Tell us what you need →Built around your business
We start with operational needs, then shape the network, cloud and support around them.
Real in-house capability
Experienced engineers who understand complex networks, virtualisation and security.
Local, accountable support
A South Wales team that treats service issues with the urgency your business deserves.
Established expertise
Connecting organisations since 2002.
Based near Cardiff, Clearstream has spent more than two decades building and managing business networks across the UK. We operate as an Internet Service Provider with infrastructure in South Wales and London.
20+years of experience
250+business networks managed
24/7monitoring and support
Need help?
Existing customer support
For service incidents, access requests or technical assistance, contact our support team directly.
Start a conversation
Get more from your infrastructure
Tell us what you are planning or where the current setup is holding you back. An experienced member of the team will get back to you.
01443 800240South Wales, United Kingdom