Can we trust tide.co for online banking?

Hello,

I just spoke with rapidformations.co.uk and they refer me to Tide Business Current Account | Get a business account in minutes for bank account opening without personal visit or HSBC in London with personal visit.

How secure is Tide.co ? do you know about horror stories the same as we have read with TransferWise and Mister Tango?

What alternatives are there?