In a few minutes later, the press will call this event not otherwise than “Flash Crash”. Immediately there are several opinions about the reason for this behavior of the GBPUSD trading pair, while there is no official data or official information (for example, from the Bank of England).
Only a month later, the bureau dealing with the control of such incidents gives veiled answers to the traders’ questions...
Lessons
The situation is included in the trading course
The reason is described in the trading course