When Tennison is in the lift with Oswald, her hair and fringe is styled with the parting on the opposite side to what it was a few seconds before in the previous scene at the interview.
When Tennison is interviewing Vernon Allen about his ownership of number fifteen, she states that he bought the house in 1989 (despite the body being buried in 1986) and then says he sold the house, with Harvey as a sitting tenant, in 1989.
At 39 minutes DCI Jane Tennison said "you bought the property in 1989" at 40 minutes Vernon Allen said "the slabs were laid in 1986/7."
When Tennyson is talking to Allen about his ownership of the house, she says that he bought it in 1989 and that Harvey moved in shortly afterwards. Allen then says that Harvey laid the slabs in the garden in 1986 or 87.
When Tennison asked whether the forensic pathologist could determine the race of the body, he said he had no idea and that they'd have an expert come in to ascertain that detail. However, even a student could easily recognize the race of a skeleton having a full set of teeth because Afro-Caribbeans have a wider, horseshoe-shaped palate, whereas Caucasians have a narrower, slightly V-shaped palate. The bridge of the nose would further confirm the race for reinforcement of that judgment. Even the back of the cranium would be different. It's implausible that the pathologist would not know the race of the corpse.