When The Doctor leaps onto Styre from behind, the machete goes flying out of Styre's hands, obviously to land fairly far away, but in the next shot it's right beside Styre's hand as he gets up.
As the Doctor, Harry and Sarah are about to leave via the transmat beam, Sarah's yellow rain suit trousers have disappeared and she is now wearing plaid culottes.
When Harry approaches the unconscious Sarah Jane Smith, the knee of his left pant leg seems clean and dry. After he leaves and approaches the unconscious Doctor the left knee of his left leg appears wet or dirty. After he leaves The Doctor and approaches the Sontaran the knee appears to be clean and dry again.
Wire visible at top right corner as Harry opens the ship's doors.