Phrase bank

You should build your own bank of useful phrases to help yourself in the speaking exam. Here is a link to a page which gives a lovely list divided into the four parts of the test:
http://sciaga.pl/tekst/75447-76-useful_phrases_for_speaking_paper_fce_cae_cpe

Here are just a few of them:

As I was saying ...
I forgot to mention ...
I'm of the opinion that ...
To my mind ...
To my way of thinking ...
I am convinced that ...
I am inclined to believe that ...

Don't get me wrong but shouldn't we ... ?
Judging by ... they must be ...
... is a separate issue.
Moving on to ...
Taking everything into account ...
Now here is a link for some phrases you can use in both speaking and writing:

http://practiseenglish.blogspot.com.es/2009/03/useful-language-for-fcecaecpe-writing.html
For example:

Listing arguments

These words and expressions are especially useful in letters, essays and articles.

Firstly/In the first place / To begin with, …

Secondly/A second area to consider is …

Another point to remember is ...

Finally, ...

In conclusion, ..

Last but not least, ...