On Monday, which has been dubbed “freedom day”, social distancing rules were removed.
Faith questioned whether everyone would be able to make the most of the relaxation of restrictions.
In a video posted on Instagram, she said: “This freedom day absolute nonsense feels like the least free that we have been for a long, long time.
“I don’t understand it.”
She said people with children or those who have anxiety or issues with socialising are “all just hiding and are less free than ever because we’re all scared to go out”.
Faith added: “I feel like one of those people who’s just like actually, freedom day has just made me feel like staying in my house and hiding.
“It just doesn’t feel safe and it feels as well like everyone I know seems to have Covid from going to a gathering or whatever.”
The London-born singer had her first child, a daughter, with her long-term boyfriend, French artist Leyman Lahcine, in December 2016, and her second, also a girl, in February after six rounds of IVF.
A few weeks ago, Faith said she would like to appear on Strictly Come Dancing - as she has always wanted to learn how to tango.
Asked on The Jonathan Ross Show if she has been approached by Strictly, the 39-year-old said: “No, I really want to be on. I used to be a dancer. I really hate dancing now. So that’s why I want to do it, as I really like torturing myself. There’d be loads of masochism in doing it.”
She added: “But I used to be really obsessed by salsa dancing when I was young, maybe 17. I used to go five nights a week and still make it into college the next morning… I’ve always wanted to learn to tango.”
Prime Minister Boris Johnson has urged the public to be “cautious” after the lifting of restrictions.