Cheryl's estranged husband Jean-Bernard Fernandez-Versini is living in a flat above a coffee shop.
Versini is said to be staying in a one-bedroom property in West London, where he is also running his consultancy firm from, reported Femalefirst.
"He could live and work anywhere in the world but he's chosen to have a base in London. She just wants to get divorced and move on but JB seems determined to cause her hassle," a source said.
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"There was absolutely no overlap with Cheryl and Liam. Cheryl and JB broke up in August and that's when he moved out. They both agreed to go to Ant and Dec's party as friends so that they could bat away the attention. Cheryl is the one that wanted a divorce and she is desperate for it to go ahead.