The proposals were in line with PPG15 legislation, which calls for comprehensive reviews of conservation areas 'from time to time', however, members of the City of London Planning Committee 'expressed strong concerns' over the report.
It is unclear what the specific concerns are, but it is thought they focus on whether the changes to the conservation boundaries could significantly relax regulations against construction in large areas of the Square Mile.
The most notable area to lose its protected status, should the proposals go ahead, is the east side of Chancery Lane and Queen Street, which is lauded by Pevsner, alongside King Street, as the 'only noteworthy street laid out in the city after the Great Fire of 1666'.
The report has now been deferred for consideration at the next committee meeting, likely to take place in six weeks time.
Should the reshuffle go ahead it would be the first time the conservation boundaries have been redrawn in 15 years.