Large retailers including ASDA and Morrisons are backing a campaign to extend Sunday trading hours.
MPs and businesses want to relax laws which prevent stores from opening for normal hours on Sundays.
Currently shops of over 300,000 sq ft can only open for six hours and not before 10am under the Sunday Trading Act 1994.
Conservative MP Philip Davies, vice-chairman of the All Party Parliamentary Retail Group, has called for the rules to be scrapped altogether, and wants MPs to be given a free vote on the issue before September.
He said: ‘I would like to scrap the Sunday trading restrictions altogether. The sky has not fallen in Scotland where there are no such rules.
‘We are living with a ridiculous anomaly. If people want to keep Sunday special that is fine, they can do so. It is about freedom of choice.’