After failing PSC inspection
The UK Maritime and Coastguard Agency (MCA) announced that7 foreign flagged ships were under detention in UK ports during September 2014 after failing Port State Control (PSC) inspection.
During September, there were 3 new detentions of a foreign flagged vessel in a UK port. 4 vessels remained under detention from previous months and 4 vessels were released during September. A total of 3 vessels remain under detention at the end of September.
Source: UK MCA