// it's excellent accommodation according to Braverman //
but last time I checked, nobody lives in the Palace of Westminster. an accommodation barge hasn't got a debating chamber, committee rooms, offices, etc and it would cost millions to convert it for such a use, even then it's likely to be hopelessly inadequate for an alleged first world government.
far better to rent a big shed warehouse building near the M4. all the space they'd ever need and a huge car park for all their their cars to park, and to land their helicopters - and it would be more publicly accessible than Westminster has ever been.