Last Wednesday, the Supreme Court found in favor of the Iranian bank in its challenge to the Financial Restrictions (Iran) Order 2009. It does not affect the sanctioning of the Bank under the current EU sanctions regime.
The Financial Restrictions (Iran) Order 2009 ceased to be in force as of October 2010. The current order was enacted last November.
Link:
HMT Iran non-proliferation sanctions page
Financial Restrictions (Iran) Order 2012