W8BEN form

[LOGIK1]

It seems I am required to fill in a W8BEN form for a certain American company who I am selling digital goods though.

To clear things up, I am a UK resident & a Sole Trader.

My questions are as follows:

1. Do I actually need to fill in anything for Line 6? (U.S taxpayer identification number (SSN, ITN or EIN))

2. Do I actually need to fill in anything for Line 10? "Special rates and conditions"

I've seen various examples of people showing how to fill this in on the web and they are leaving these two fields blank. Some people suggest that leaving Line 6 blank just means the form is only valid for 3 years. Other sites suggest that having either ITN or EIN numbers also requires that I submit a US tax form every year too.

One last question:

3. For Lines 7 (Foreign tax identifying number) Is this my UTR or NI number?

Thanks in advance for any help and advice.

[Generix]

I'v seen this form number before, isn't this a US withholding tax or similar form?

[LOGIK1]

Yes, that is correct. The forms are downloadable from this website. http://www.irs.gov/app/picklist/list/formsPublications.html?sortColumn=sortOrder&indexOfFirstRow=0&value=&criteria=&resultsPerPage=50&isDescending=true

The specific pdf for the W8BEN is here : http://www.irs.gov/pub/irs-pdf/fw8ben.pdf