So the FTSE isn't a measure like you intimated. Ah good old anecdotal mate of a mate made money...traders making money off market volatility, how dare they do their jobs. But lets circle back as what relevance does that point have to do with recession?
Shock as entities not performing well is part of the definition of recession...was there a point in there? Of course it does, if entities aren't performing well there is a very real impact on their future investment plans in the UK, this in turn puts downward pressure on wages and recruitment all of which have a negative impact on GDP.
Markets fluctuate, yes but the markets and the pound had already priced in the possibility of brexit hence what was largely perceived as a depressed value of the pound at 1.4. The reason it rose to 1.5 was on the back of market positivity and sentiment that remain was likely to be the result. We then saw that despite the depressed pricing at 1.4 the pound has taken a further hit following the vote to the lows of 1.31 before stabilising around 1.32-1.34. Foreign investment in property is a very small percentage of our GDP and in fact as already pointed out is just going to put further pressure on our property market.
Like I said recession is a real possibility, you can ignore that if you want but reality always bites eventually. What we need as a country is the parliamentary position to be sorted out quickly and negotiations to begin and conclude in our favour. If that happens hopefully we can limit any long term damage.