Limited comany or Umbrella ?

Having just started contracing via an Umbrella company, one question I have before I go limited, is how do you know if a contract is going to get caught by ir35, and what can you do to avoid it?

Also have many contractors moved from limited to umbrella companies?

Limited Company if you're outside IR35 , umbrella if you're inside

I was in the same position a couple of months ago and decided to go for the umbrella option for now because there's virtually no hassle involved. Registering with a company like ParasolIT is easy and you can do almost everything online. They are cheap too (around £45 if you get paid monthly).

I am going to look into the option of setting up my own ltd co when my current contract expires.

I am considering a move from permanent to contracting and it seems that the first major decision to make is whether to form a limited company or work through an umbrella. I would appreciate some opinions on which is the best route to take for newcomers at the moment.

Thanks in advance.