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delivery of digital services, including broadband access, smart metering, and television services from companies such as BT. One of the practical benefits of PLT is that it frees the user from a fixed location.

It is acknowledged that as PLT moves to higher frequencies, above 30 MHz, there is increased potential for interference, although as my hon. Friend pointed out, this is the case not just with PLT but with a wide variety of new and emerging electronic systems. Experiments by the BBC indicate there is some potential for localised interference. In practice, however, the evidence from people using the devices suggests that this problem is negligible. There are 1.8 million devices in service in the UK, but the number of complaints has been confined to a couple of hundred over the past three years. I shall turn to those in a moment. It is worth bearing in mind that those complaints are centred on a specific group of users, principally hobby radio amateurs, including those using citizens’ band radio. That is not to say that this group is not important, but it suggests that the nature of the problem is confined. The experience in the UK is reflected elsewhere. For example, following complaints in Germany, the authorities investigated the situation, but declined to ban any products. In Austria, following a product challenge brought by the official regulator, the courts rejected the claim of non-conformity.

In common with most electronic products sold in the UK, power line technology equipment is required to comply with the Electromagnetic Compatibility Regulations 2006, which are based on the European electromagnetic compatibility directive of 2004. The essential requirements, which I know the House will want to understand, are that PLT equipment, to quote that regulation,

“shall be designed and manufactured, having regard to the state of the art and good engineering practice, so as to ensure that the electromagnetic disturbance generated does not exceed the level above which radio and telecommunications equipment or other equipment cannot operate as intended.”

The current regulations, as we have heard, do not set specific levels of interference; rather, they set objectives to ensure that properly designed radio systems will operate when other electrical equipment, such as PLT apparatus, is in use. The regulations are trying to remain flexible as this technology develops and adapts. Equally, not imposing a mandatory fixed standard allows the regulatory environment to adapt as experience of the use of this new technology emerges.

My hon. Friend referred to EN55022, and I am sure most Members are no more familiar with it than many Ministers have been over the years. Let me explain that, following discussions between the European Commission, member states and the industry, it was agreed that this standard could not apply to PLT equipment for a variety of technical and administrative reasons. The Commission has therefore asked the European standards organisations to adopt an appropriate standard. Until such time as a standard is available—it is logical that it will affect both the UK and the wider markets in which British manufacturers work—manufacturers will need to design products that meet the objective, taking into account key issues such as the extent of knowledge, the requirements of other users of the spectrum—an important principle—good engineering practice and the state of the art. This does mean that, for a period, there will be a lack of absolute certainty as to what is acceptable. Let me be clear, however, that should products be placed on