Any move to alter the UK's clocks would strengthen demands for Scottish independence, a veteran Tory has warned.
Legislation to pave the way for the clocks to be put forward by an hour all year round for a trial period faced its final Commons hurdle on 20 January 2012, but ran out of time.
But the Daylight Saving Bill faced opposition from a number of MPs and the government has insisted any move to Central European Time - dubbed "Berlin Time" by its critics - would not go ahead unless there was agreement with the devolved countries in the United Kingdom.
The bill was being taken through Parliament by Tory Rebecca Harris, with backing by the government. It would have allowed for a study into the benefits of moving the clocks forward by an hour, meaning lighter winter evenings, which supporters claim would cut road deaths, boost tourism and reduce energy use.
Under the bill this would have been followed by a three year trial time shift of having the clocks at Greenwich Mean Time plus one (GMT +1) in the winter and GMT +2 in the summer.
Speaking at the bill's report stage, Conservative MP Christopher Chope said "the Achilles heel" of the legislation was that "it enables the United Kingdom government to change the time zone in Scotland without the consent of the Scottish Parliament".
The bill aimed to get the government to look into the costs and benefits of shifting Britain's clocks forward by one hour throughout the year.
You can see part two