Do you need an ITIN number in the UK for an LLP? If you think large accounting firms like Ernst & Young, PWC or Deloitte and Touche can only assist with LLP ITIN applications, you are wrong. There are smaller certified acceptance agents like Just Breve who are well versed in these types of applications and for a reasonable fee. We assist clients on a regular basis who require a US TIN for purposes of either filing a US 1040NR tax return or where the LLP requires the number to