No, it's just not true. If you've been told this, you've been lied to, probably by someone with a political reason to try and scare you. The left always say this, but the reality is more public money than ever is spent on the NHS
This is what the Kings Fund charity said in 2021:
"Overall, there is no evidence of a significant increase in spending on private providers or widespread privatisation of services in recent years."
https://www.kingsfund.org.uk/publica...rivatised-2021