I was just about to post the same question - I tried to go to the online remittance site last night, and again this morning.
The main website (www.pnbeurope.com) is still working, but that appears to be hosted by clara. I guess this means that the remittance host (www.pnbeonline.co.uk) is actually in the PNB offices. The office is on the move, so the machine (and internet connections) will be moving too. Perhaps it would be easier to phone the Notting Hill branch ....
