I'm open minded to other asset classes but I'm afraid you've lost me, Swifty, on the government letting sterling fail. Completely agree that we're in a macroeconomic hole, given inflation and the level of public debt. But sterling isn't going to become worthless overnight.
I'm an ex investment banker so, yes, I do have trust in our financial system. Crypto is completely different. No issues if you want to put your eggs in that basket, but (I'm also an ACA) I wouldn't advise someone to put their life savings in crypto. A small sum as a punt, maybe.
On the topic of monthly investing/pound cost averaging, I've been doing some research for work this week on how long the FTSE 100 took to rebound after previous crashes. It was about a year for the last two, then four for the dot.com and financial crisis crashes.
I'd say keep investing but the FTSE 100 has been less hit than the Nasdaq so I wonder if further falls are coming for U.K. stocks. Particularly with rising inflation and interest rates, plus negative GDP growth.
One thing I have done is shorted the FTSE. I've bought the L&G FTSE 100 Super Short ETF (SUK2) which goes up by twice the amount that the FTSE falls (and vice versa). It's one way of hedging against further falls.