I did my French GCSE at newman last year and I found the best way to memorise the oral was simply to read it and read it until it's stuck. Read a sentence out loud a couple of times and then try and say it without reading the paper. Also I recommend not to do it all at once. Learn say one paragraph per night and that way you can say it on your head as you walk home for example, i found that I remembered it better doing it that way.
Although I am fluent in French so this may all sound pretty easy for me for maybe not for you. Anyway good luck mate
Although I am fluent in French so this may all sound pretty easy for me for maybe not for you. Anyway good luck mate