This is a classic example of who trend indicators can be used to exploit the markets. Many were simply watching structure levels largely - hoping for GBP to move south. The charts were flashing 'go north' on daily and 4H time frames. Then emerged the opportunities on 30 min to 1H time frames as it pumped north. This is not with the benefit of hindsight? Why? Because the market had all the information right there. The lesson in this for some traders who lost would have been about pitfalls of simply following crowd sentiment.