We design, install, and manage business-grade Wi-Fi and wired networks for London offices of all sizes, from a single-floor SME to a multi-site business or a flexible office building with multiple tenants.
What we design and install
Wi-Fi coverage and access points
We survey your office before installation to plan access point placement that delivers full coverage across every area, including meeting rooms, breakout spaces, and any areas where signal typically drops. We install enterprise-grade access points configured for your environment, not consumer-grade routers pointed at the ceiling and hoped for.
Network switches and cabling
The physical infrastructure behind your network — the switches connecting every device in the building and the cabling running between them — is designed and installed as part of the same engagement. We handle structured cabling, patch panels, and switch configuration, so your network is built correctly from the ground up rather than accumulated piecemeal over time.
Network segmentation
A business network should have at least two separate networks: one for staff devices accessing company data, and one for guests or personal devices. Mixing the two on a single network creates both a security risk and a performance problem. We configure your network with proper segmentation so staff traffic and guest traffic are kept separate, with different security policies applied to each.
Firewall configuration
Your firewall is the boundary between your internal network and the internet. We configure and manage business-grade firewalls, setting up rules that control what traffic can enter and leave your network, blocking unnecessary inbound connections, and flagging unusual patterns. A properly configured firewall is also a requirement for Cyber Essentials certification.
Dedicated internet access
For businesses that need guaranteed, uncontended bandwidth, we configure dedicated internet access — a fixed amount of bandwidth that is not shared with other businesses in the building. This is particularly relevant for businesses in multi-tenanted buildings where shared connectivity can be inconsistent, or for any business where internet reliability is business-critical.
VPN configuration
We set up and manage VPN (Virtual Private Network) connections so that staff working from home or another location can connect securely to your office network, and so that connections between office locations are encrypted and secure.
Static IP addressing
For businesses that need a fixed public IP address — for remote access, for hosted services, or for compliance reasons — we configure static IP addressing as part of the network setup.
Flexible office spaces and multi-tenanted buildings
We have worked with flexible office spaces and multi-tenanted buildings in London since 2002. For landlords and operators managing multiple tenants under one roof, we provide:
- Shared infrastructure with tenant-level segmentation, so each business operates on its own isolated network without being able to see or access other tenants’ traffic.
- Guest Wi-Fi with bandwidth management, using Quality of Service policies to ensure no single tenant can consume all available bandwidth at the expense of others.
- Per-tenant billing and access control, so tenants can be added, moved, or removed without affecting the rest of the building’s network.
- Centralised monitoring across the whole building, so connectivity issues are identified and resolved by us before tenants raise a support ticket.
Ongoing monitoring and management
Network installation is not a one-time task. We monitor your network continuously after installation, watching performance, flagging issues, and managing firmware updates on switches and access points. If something degrades or fails, we know about it and address it — in many cases before anyone in your business notices.
We also handle any changes to your network as your team grows or your office layout changes: additional access points, new switch ports, changed firewall rules, or new VPN connections.
Part of your managed support contract
For Network Fish managed support clients, network monitoring and ongoing management is included as part of your contract. Wi-Fi and network installation projects are quoted separately based on the scope of the work and the size of your office, but ongoing support and monitoring after installation is covered under your existing arrangement.
One monthly fee. One number to call.
The day-to-day reliability and security of your office network becomes our job, not yours.
