These new signs appeared recently after it was decided (maybe?) that the footpath and part of the road does in fact belong to the building at right. The orange markers are delineating a proposed 'under cover bike rack'.

<a href="https://commons.wikimedia.org/wiki/File:Assertion_of_footpath_ownership_on_High_Street.jpg" rel="noreferrer nofollow">commons.wikimedia.org/wiki/File:Assertion_of_footpath_own...</a>