Forex Reasons for the slide in the Pound

I was thinking over the main catalysts for the slide in the pound recently... And these are all I could come up with.

One, investors expected Britain to normalize monetary policy in sync with the Fed. That has not happened... Resulting in investors leaving the pound for the dollar.

Two, there has been a little fear spreading about Brexit... Probably has moved the market a little.

Three, there has been a lot of vocal finance analysts with influence harping about the overvaluation of the pound which have also moved the market.

The pound has slid pretty hard though for just these catalysts, can anyone think of any additional catalysts? I'm talking about logical catalysts which would influence the average investor or shift a institutional trader into making moves. Besides price to price feedback which is always King.

Source.