Hakim collected the toxic waste in Sheffield, hoping to prove something during the giant spider outbreak in the city. He appeared to be a conspiracist. He left the toxic waste in the living room stacked up in a pile without a clue what it contained. It was a habit that annoyed and frustrated his wife and his daughters.
When Yasmin returned to Sheffield after her involuntary adventures in time and space, she brought the Thirteenth Doctor and Ryan Sinclair home for tea. Hakim seemed surprised but pleased that his daughter had brought friends home. He offered to make pakora, which he was supposedly bad at.
Yaz left while Hakim was making dinner to pick up Najia, who didn't want her husband to know she had been sacked as general manager of Jack Robertson's hotel. Yaz instead claimed she was taking a parcel and while she was away he and Sonya seemed exasperated at the time Yaz and Najia were taking.