Hi Ondrej,
It is possible to submit a credit transfer application, however it would not be guaranteed to be assessed in time to be able to register for study with the Open University in October.
It usually takes 4-6 weeks to process a credit transfer application, so we set the cut-off date for applications to be 13 August. You can find details of the credit transfer process and the application form here:
http://www.open.ac.uk/study/credit-transfer/