I'm not too sure about politics and international relations, but I do know that the clearing offer for law last year was AAA. You can probably get in touch with the school of politics and international relations to ask about their clearing requirements from previous years - I'm sure they'll be happy to let you know! Their contact details can be found here: https://www.qmul.ac.uk/politics/contact/.
Hope this helps!
QMUL Student Ambassador and TSR Representative