Hi Lindsey, I hope you don’t mind me interjecting. I have just received an EIN yesterday so I can help you.
Once you have your UK company set up…phone 0012679411099 (IRS) OPEN 6AM TO 11PM (I think they are 4-5 hours behind UK).
It is very simple, they ask simple questions you can answer, such as your name, address, company name, company address, a couple of easy questions about your business and they give you an EIN no. right there and then to write down. It took a total of 30 mins altogether as I had to wait in a queue.
They won’t send confirmation paperwork by email you need to either get it faxed or an efax? They ususally do it there and then (if you’re near a fax) but system wasnt working so I need to phone back (when I get get a fax!). The number is all you need for right now and works from 2 weeks after you are given the number, but would think we will need paperwork down the line.
There’s not many faxes? around these days, but I saw a website about efax and will have a look but not sure about them at the moment, let me know if you have any knowledge.