According to that we're not middle class.
I'd say we're squarely middle class, possibly even upper middle - degree educated, professional jobs, own home, kids at independent schools, visit museums and galleries, have pensions and investments.
We're not very materialistic, particularly regarding branded items. We're more into reusing and sustainability, and ethical production than buying the latest brand name. We're not into TV watching, so don't have a smart TV.
I don't think that list remotely resembles middle class living.