 After several weeks , Leon and Fatboy return to Walford to look for Zsa Zsa , who has run away . They eventually settle in and make new friends . Zsa Zsa finds three dates for Fatboy , but none of them are genuine . Fatboy borrows Darren Miller 's ( Charlie G. Hawkins ) ice cream van to practice for his driving test , which he fails , but he buys the van from Darren . He helps Whitney Dean ( Shona McGarty ) sell T @-@ shirts but sells them to Mo Harris ( Laila Morse ) , who has been asked by Becca Swanson ( Simone James ) to buy them so she can sell them for a greater profit . Becca insists she did not know they were Whitney 's and then flirts with Fatboy . However , he later humiliates her by designing T @-@ shirts for her that show a mirror image of the word " chav " . He finally passes his driving test and DJs for Ronnie Mitchell ( Samantha Womack ) at R & R nightclub . Fatboy , Leon , Zsa Zsa , Whitney , Lucy and Lucy 's brother Peter ( Thomas Law ) go to Hampshire and he attends a party with Peter while the others spend time in the woods . He is reunited with Mercy but a fight breaks out so they escape and drive back to Fatboy 's uncle 's home . Peter hits something with the van and the next day they fear it was Leon , as he is missing . However , Leon turns up and they realise Lucy wanted to turn everyone against him , so they play a trick on her in revenge . Fatboy is then shocked to discover that Mercy is planning to move back to Nigeria . He realises that neither Mercy nor her grandmother Grace ( Ellen Thomas ) want to leave London , and convinces them to stay . 
