[underwurlde]

Hello,

Perhaps someone knows the answer to this hopefully:

I am a permanent employee in the UK & have been all of my career.
Now I want to spread my wings and am starting to do so.
To this end I have done some work for another company in my own time at home.
They now want me to bill them for my work, i.e. rasie an invoice.

But now I am stuck as I don't how to do this entirely!
Do I need to set up a company in order to be able to invoice another company?
How do I pay tax and not get caught out by this?
Or am I right in thinking I just raise an invoice with the work I've done, itemized & added up, with my name on it stating how to pay me. Then at the end of the year I just fill in a tax return form stating what extra I've earnt in my spare time?

Thanks all,

Andu