Just to let people know, when you have to migrate from ESA to UC, you don't lose any money due to the transitionary payment which is paid unless you have a significant change in your circumstances. However you only get a small discount for council tax and then you are liable to pay the remainder. In my case I have to find £135 a month from the money we are getting. It is a huge amount considering on ESA you got the whole amount of council tax covered.