Help - umbrella company or set up own business?

[MintPattie]

Hi

I've just started to take on a bit of freelance work. At the moment it's with the one company and involves ad hoc projects that I bill for the time taken.

I haven't actually billed them yet as I'm not sure which is the best way to approach this. At the moment I'm leaning towards an umbrella company but don't know which one....looking for some advice from the worldly wise