1 room house of 50m² in London

I’m a full time working mum currently looking for a 2 double bedroom house or flat to rent long-term. I’ve been in my current rental for the last 4 years but we’ve outgrown it now and need more space. Ideally I’m looking around Brent Cross / Cricklewood (or close by) as my dependent attends school locally, so I need to stay within the area. I’d love somewhere with a garden or balcony, and I’d prefer a separate kitchen rather than open plan, although I’m open to the right place. One bathroom is fine but it must have a bath. Storage and good natural light are really important too. Gas and electric preferred, parking is needed, and ideally the property would be unfurnished. If you have something suitable available, please message me with details and I’ll be happy to arrange a viewing.