Related but going off the car thread theme, I once went through several weeks of arguments with HMRC about documents I should have submitted but never received, which in essence meant I was the only one man partnership in the UK, which the woman at the tax office failed to sort despite confirming she had (for the third time), which lead to a £1000 fine, which lead to £50 in compensation for causing me stress! Useless bastards! It was a nightmare getting mine and my Mrs' tax affairs straight before leaving the country too. But of course people claiming benefits is the problem with the UK's money problems*
*See political thread
Edit - remembered the time we had to provide HMRC with a partnership number which we couldn't get without an individual tax number, which we couldn't get without a partnership number, which....