This is not true. I’ve personally looked at the best execution report with our compliance team, including a snapshot of the LSE order book at the time of execution.
Much of what has been written in this thread is also factually incorrect, including the title of the thread.
The cause of the issue experienced is that the trade was executed at one of the most volatile times ever seen on the London Stock Exchange. The price swings were very large that morning and the bid/ask spread was much wider than under normal market conditions.
To be clear, Freetrade does not execute trades if the price quoted by a market maker is outside the observable bid/ask spread on the LSE order book. This can lead to order rejections, especially under turbulent market conditions, as experienced by many of our customers on Monday.
We’ve written about best execution, market makers and spreads extensively elsewhere so will leave a couple links here and close this thread.