Bristol Is Open — Programmable City Network Testbed

🤖 AI-generated summary of the sources below · 🔎 Last verified 2026-08-06

This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

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Bristol City Council and the University of Bristol announced Bristol Is Open in March 2015: a city-scale research testbed pairing a fibre ring with a software-defined network, a wireless mesh and later 5G and IoT trials. The joint venture lasted about three years; the university left, and the council-owned company closed out Big Clout, REPLICATE and 5G Smart Tourism. The council now calls the company dormant, though Companies House still lists it as active.

Completed 📅 2015–2018

Outcome📉 Scaled back

Evidence• No measured figure

Run byBristol City Council (BristolIsOpen Limited; originally a joint venture with the University of Bristol)

Scale🏙️ City-wide

FundingUK Super Connected Cities programme (Building Digital UK) and Innovate UK

🎓 Lesson

A testbed is a company as well as a network. When the joint venture behind Bristol Is Open dissolved, the legal vehicle outlived the programme it was built to run — still on the register in 2026, filing accounts, trading in nothing.

📡 Data & IoT Connectivity & 5G Sensors & IoT

Sources

↗ Companies House — BRISTOLISOPEN LIMITED (09302408)Primary register: incorporated 10 Nov 2014, registered office City Hall, status Active. Filing history shows micro-entity accounts for y/e 31 March 2025 (filed 9 Dec 2025) and a confirmation statement made 27 March 2026 — not dormant-company accounts.

↗ Bristol City Council (owner, official company page)"After three years of operation, Bristol is Open came under the sole ownership of Bristol City Council who oversaw the completion of these projects. The company is now dormant." Names Big Clout, REPLICATE and 5G Smart Tourism; funding from Building Digital UK's Super-Connected Cities programme, 2013-14.

↗ University of Bristol (co-founder, launch announcement, 10 March 2015)Launch announcement: fibre, wireless and mesh networks with a software-defined network as "the city operating system"; funders named as the Super Connected Cities programme and Innovate UK.

Continue exploring

Compare this project

🇬🇧 CityVerve IoT Smart City Demonstrator · Manchester The direct sibling: both UK national-programme demonstrators of the same cohort, ended on schedule — CityVerve's domain went to a gambling site, Bristol's company survives as a non-trading shell. 🇬🇧 Glasgow Operations Centre · Glasgow The third of the UK demonstrator cohort, and the contrast: Glasgow's build outlived its programme as a staffed service, Bristol's did not. 🇮🇪 Smart Docklands · Dublin Council-backed connectivity testbeds of the same era: Dublin narrowed to one district and a neutral-host model, Bristol went city-scale and dissolved the vehicle.

Explore the wider context

📟 A Reading Is Not a Decision 📶 Connectivity & 5G guide 🏙️ Bristol city profile 📡 Data & IoT projects 📖 LoRaWAN 📖 Adaptive traffic signals 📖 Automated speed enforcement (speed cameras)

📎 Cite this project

1001 Smart Cities (2026). “Bristol Is Open — Programmable City Network Testbed” — Bristol, United Kingdom. The Smart City Atlas. https://1001smartcities.org/projects/bristol-is-open/ (last verified 2026-08-06). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

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