"I wholeheartedly support the Close the Door campaign and the work it is doing to persuade retailers to close their doors against energy waste.

Estimates suggest that shops waste around £300 million each year because their doors are left open. Many could slash their energy bills by 20-25% if they closed them. The excess use of energy is also contributing to climate change but could be solved by simply shutting the door and keeping the heat or air conditioning in. I have heard both shop staff and customers complaining on windy days about icy air whistling in through open doors. The policy is madness and I hope retailers will wake up to the waste.

Open doors are intended to entice customers to step inside. But with the United Nations predicting that billions will suffer from the effects of global warming it is morally indefensible to waste energy in this way."

Euro-MP Chris Davies, Liberal Democrat environment spokesman in the European Parliament

"I thoroughly support the aims and objectives of the Close the Door campaign and their work to persuade retailers to keep their doors closed when using energy to heat or cool shops.

We now live in a situation where energy waste is simply not acceptable. Climate change is no longer in question, and with major aid agencies and the UN predicting wide scale human suffering and food shortages from global warming, we have to pay urgent attention to avoiding energy waste.

By closing doors while using energy, retailers will also reduce their bills. Many shops already do this. Concerns about enticing customers in should be met by means other than leaving the door open in all conditions. Close the Door is a simple idea that makes a very real difference.

The Close the Door campaign started in Cambridge and is now rolling out to other cities. This is a good example of the many exciting new ideas of vision that come out of this region. Please follow me in supporting the campaign whether you use shops as a consumer, or work in the retail industry. It makes sense for all of us."

David Howarth, MP for Cambridge