ttyc on "(Attempted) Domain change and now 404's across the board"

Hi,
Serious f**k up today. I tried to change my domain from one name to another. i have both hosted here in the uk by namesco. Not sure what happened, but I had to scrap the idea and try to replace original domains, as I just couldn't get the change done correctly. Now, http://putneyphysiotherapy.com/wp/ is weirded out! Only this page works and the rest are 404's. What's happened? help!