No it isn't .......
Revolut, as an e-money institution (EMI), protects your money through “safeguarding”, which differs from how your money is protected by banks in the UK through the Financial Services Compensation Scheme (FSCS). It is important to know this difference and we have put together this blog on how your money is protected with Revolut through “safeguarding”, and not through FSCS.
https://blog.revolut.com/how-we-keep-your-money-safe/