Perhaps the question really to be asked should be - can the land at Idle be used for anything other than a fire station?
Well actually we know the answer to that
NO - it can't
In fact the deeds are very specific
"For the benefit of the said Summerfield Estate at Idle belonging to
the Vendors or the part thereof for the time being remaining unsold and
so as to bind the property hereby conveyed the Corporation hereby
covenant with the Vendors that they the Corporation will not erect or
permit to be erected thereon or on any part thereof any building other
than a Fire Station or building ancillary thereto and will not carry on
or permit to be carried on upon any part of the said property any noisy
noxious or offensive trade or business other than as aforesaid."