a) Different size. Stand on Bishops Bridge Road and admire the symetry
of the Brunel design, then weep at the oversized lump attached to it
b) different roof construction - where's the glass ?
c) different detailing (one of the glories of Paddington is the stars
and planets motifs in the roof arches - put there to hang cradling from
to clean the roof glass apparently - but of course no roof glass in the
Edwardian bit.). Even the west end glass wall is completely different.
d) and over half a century too late as well :O)
Flattening it and building a block of offices in sympathetic style and
matching scale to that on the southwest side would have far better
preserved the aesthetics (from the Bishops Bridge end - the only place
with a sensible view) of the historic station.