Obtain the contact details of CEOs in about 800 UK housing associations.

We have a list of about 800 UK housing associations. We need an hourlie to isolate the ones that employ more than 100 employees and then find the contact details of the top person in each. Could be Chief Executive, CEO, MD, whatever. We need first name, last name, email address and wherever possible their direct dial and/or mobile phone number.

We are naturally concerned that this task is carried out with sensitivity and we dont want to pay for the work only to find out later that much of the information is incorrect. I also welcome suggestions as to how we would check out your application to know if you'd be the right person for this task?

Our intention is to write a simple email to each one offering our services in the field of 360-degree feedback.