I have found a useful website that shows ident's for popular channels including all channels on BBC, ITV and Sky. The link to the website can be found here. From this website I managed to gain information on the real media conventions of idents.
Here is a link to my slideshare presentation about the real media conventions of idents. This has helped me as I have gained the key features of idents which has prepared me to create my own. I have also included a conclusion and 'lessons that I have learnt' that will enable me to create a successful ident permitting that I keep to these lessons learnt.