Try The British Heart Foundation. They have a furniture showroom/store on the Holloway Road, and one in Finchley
Or Barnet Furniture Centre - they resell but also do free household goods for those in need?
Or post the items here on HoL with photos..
Agree with the above. When I had to clear a flat, BHF were the only charity I could find who’d collect furniture free and were less prescriptive about what they’d take than some others (though obviously still requiring fire safety for upholstery, etc). You can Gift Aid anything you donate, too, which helps them when they sell items in their shops.