Looking for an intermediary

[NotAllThere]

Don't understand the point of this post. Go with an umbrella company if you don't want to create a limited company. Not rocket science.

Having used Openstrike's services in the past, I'm guessing the gig is something a sole trader would normally do, but for some reason the client decided to use an agent. It probably is something that can be done genuinely by a freelancer.

In the past, I've taken on people direct for a short period to do a specific, defined bit of work, for a fixed price. They've all had their own ltd co, so the question never arose, but I can't see why I wouldn't use a sole trader.