Voice over artist for online training courses

We have several on-line training courses which we have just updated and need the voice over re recording they vary from 1 1/2 hrs to 6 hrs in duration and are all based around food and health & safety.
The files are created in Adobe Captivate 6 and 7.
I have attached a sample of one of the shorter courses which still needs a some work.
We require to work to be supplied back to us in modules with a 2 or 3 second break between slides so that we can chop it up and add it to Captivate.
Alternatively recording directly into Captivate or doing the work at out offices in Birmingham where we have a facility for recording