I would have said because of Bre-X, one of the largest frauds in Canadian history. In 1995, they reported finding gold in one of their mines. That turned them into a $5B company. In 1997, Bre-X collapsed when it was revealed that they had salted their geological samples with gold. https://en.wikipedia.org/wiki/Bre-X

That said, I remember the name, and they're obviously unrelated. Maybe that's mission accomplished.

My first thought when seeing this was "they have a way to shield UK startup financials from Brexit".

I was thinking it means their company will never have a "just google it" slogan attributed to them "Hey, how should we setup our startup bank accounts?" "Just Brex-it!"

I wouldn't want to work in the IT department

I also don't understand why they picked a name like this when anyone who is anyone first thinks of Brexit. Not a good look.

I've read it twice now as "brexit crash".

It's one of those cases when you can't succeed due to a poor name.