Ionica (company)

Ionica was a domestic telecoms provider based in Cambridge, UK, between 1995 and 1998.

Ionica Logo
An Ionica dish

Founded in 1991 Ionica offered an alternative to British Telecom, but technology costs and limiting factors caused the company to cease trading. In particular the technology used spectrum at 3.5 GHz, which limited line of sight range to the base station, and was narrowband, which meant it could not provide broadband Internet access.

The Ionica system used a microwave transmitter in order to provide the local loop, thus avoiding reliance on British Telecom for this final link to the consumer. The technology, known as Wireless local loop (WLL), was developed in partnership with Nortel.

At the peak of the dot-com boom Ionica was valued at over one billion pounds, making it the first Silicon Fen company to take such a distinction. The company floated in July 1997 with shares initially trading at 390p.

The company’s initial aim was to take twenty percent of the domestic market with offers such as multiple ringing tones and a free second line but the technology used proved to be limited, with heavy rain and local radio transmissions interfering with calls. Despite the technology having been used with great success in remote areas of Canada, it proved to be unsuitable when placed in a British urban setting.

First signs that Ionica was in trouble came when expansion plans were put on hold in an attempt to improve service and add much needed capacity in existing markets such as Yorkshire, The Midlands and East Anglia.

By March 1998 the company was looking to bring in an outside investor and shortly after failed to agree terms with existing investors for the £300 million debts already accumulated. By August of that year Ionica had failed to find a 'strategic partner', and despite strong assurances that cash resources of £45 million would keep the company solvent until January many observers predicted an imminent end.

On Thursday 29 October 1998 administrators were finally called in and the company's assets were valued at £250 million. The following Monday administrators made half the company's 1,200 staff redundant.

From December 1998 onwards Ionica's 62,000 customers were gradually migrated to BT with special prices being offered. In the mean time BT also supported Ionica financially, allowing customers to continue using their phones.

Service finally stopped on 28 February 1999.

The former Ionica building was constructed in 1994 and is located on St John’s Innovation Park, adjacent to the A14. Despite an apparently desirable location the building has remained vacant for much of the time since the demise of Ionica. CSR plc moved into this building in May 2007.

The administration process was finally wound up in March 2009.[1]


  1. RIP Cambridge wireless firm Ionica bequeaths 43m pounds, Business Weekly, 4 March 2009.

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