Go to System Preferences and select Flash Player (it should be at the bottom of the window). Then from the tabs on top select Camera and Mic and then there should be a white button saying “Camera and Microphone settings by site”. Click on it and this should open a new dialog box. At the bottom left corner of this new dialog box, click on the + to add a new whitelisted website. In the “Website Domain” field type “www.mytutor.co.uk” and under “When this site wants to use camera or mic” select “Allow” from the drop-down list.