The 26-year-old actor is said to be missing his friends and family and wants to return in order to make a fresh start, reported Radar online.
"He is selling his home in Los Angeles, not only because it holds bad memories, but because he wants a fresh start. He never fell in love with Los Angeles and has always longed for home," a source said.
"When Kristen was shooting 'Snow White and the Huntsman' in London, he made his excuses to visit her as much as he could - he missed it so much.
"Despite making friends in America, Robert longs just to have a pint with the mates he grew up with in a local west London pub. He's just a regular guy," the source added.