Blames driver error, although surely the signalling should have prevented the collision?
Second paragraph of the Report you linked to above states:
Just as they reached them, the 12.49 train from Hainault to Ealing Broadway (T66) which had passed two signals at Danger and had been tripped resulting in an emergency brake application, entered the station at about 12 milelh and collided heavily with the rear of T10.
Last Edit: Sept 4, 2019 21:22:13 GMT by Dstock7080
The collision revealed a design flaw that the outer home signal would clear with simple approach control regardless of the speed of the approaching train.
In this instance Train 66 was travelling at a greater speed than the reduced overlap on the intermediate home was calculated for (what we would now term a compromised overlap) and was not brought to rest prior to colliding with T10. The approach control feature was decommissioned following the collision and decommissioned or modified where other similar circumstances existed.