• A Memorandum of Understanding (MOU) is an informal record of a non-legally binding arrangement between states on matters that are considered unsuitable for inclusion in treaties. The terminology used in MOUs is different from the terminology used in treaties. 

• The UK does not publish MOUs and does not register them at the UN. In addition they may not be deposited at the National Archive until many years later.

• The FCO (Foreign & Commonwealth Office) does not automatically make MOU material available but it is worth contacting the FCO to find out what is available. The FCO's contact details are as follows: tel: 020 7008 1109; email: treaty.fco@gtnet.gov.uk

• Modern Treaty Law and Practice (2nd edition 2007) by Aust - has a table of MOUs. This is held by all the Inns of Court Libraries.
   

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