​Starting up on my own

I need some advice and see if what others opinions are on this. For context I am based in UK.

I have worked in a type of construction/maintenance industry for a while, which supplies B2B customers mainly. I know the products and suppliers really well but not the installation process which I am learning now in my current role. I am on 60k salary and company car + some other perks, but I cant shift the idea of starting on my own and sub contracting the work at first with eventually getting my staff/van to carry out the work whilst i focus on pricing/selling.

I have had couple of side hustles in the past so I can build the website, marketing, sales, crm etc. My contract doesn’t mention anything about conflict of interest etc. but of course I will have to keep it on the quiet right until I start.

I am in my 30s with a mortgage and 1 baby.

Questions- what are people opinions, thoughts?

What should I look out for? Is it worth having your own business these days in UK?