What the law requires
The Education Act 1996 places the duty on parents, not on qualified teachers. The only requirement is that the education you provide is efficient, full-time, and suitable to your child's age, ability and aptitude. Your qualifications aren't mentioned anywhere.
Local authorities cannot require you to hold a teaching qualification to home educate.
What actually helps
Reading to your child every day. This one habit outperforms almost every other educational intervention ever studied.
Being willing to say 'I don't know, let's find out together'. Modelling curiosity is more powerful than pretending to have all the answers.
A rough weekly rhythm you can stick to on the average day, not the perfect one.
Access to books, a library card, one maths programme you trust, and other home educating families you can meet.
Where teachers are helpful, and where they aren't
Qualified teachers know a lot about managing thirty children, differentiating for a mixed classroom, and covering a syllabus at pace. Almost none of that is what home education needs.
What home education needs is what parents already have: knowing your child, noticing when something clicks or doesn't, and the freedom to slow down or speed up as the day requires.
When you're stuck on a topic
You will hit topics you don't remember or never learned. Long division, fronted adverbials, the water cycle, why the moon has phases. This is normal.
Read a short explanation the night before, a Khan Academy video, a BBC Bitesize page, or your Homeschool Club teacher explaining it in plain words. You'll be an hour ahead of your child, which is all you need.
What confidence looks like six months in
Families who've been at this a while don't feel like teachers. They feel like parents who know how their child learns, what they're excited about this month, and where to reach for help. That's the actual qualification.