What BBC Three writer and Sharon Horgan collaborator worked at the White Bear theatre?
White Bear Theatre:  Notable theatre practitioners who have worked at The White Bear include Joe Penhall, Dennis Kelly, Mark Little, Emily Watson, Tamzin Outhwaite, Kwame Kwei-Armah, Vicky Featherstone, Torben Betts, Lucinda Coxon, Adam Spreadbury-Maher, and Brice Stratford. Dennis Kelly:  He is perhaps best known for co-writing BBC Three's sitcom "Pulling" with actress Sharon Horgan, for co-writing "Matilda the Musical" with comedian Tim Minchin, and for the Channel 4 conspiracy thriller "Utopia".
Dennis Kelly