OP
Ramjam
Take a look at this spreadsheet, it may be what you need. Once you've got your MCS it's just a matter of making sure that what you do everyday is completely compliant. This spreadsheet produces site surveys and quotes that mean that you've gathered and recoded everything and delivered all of the right paperwork to the customer. It looks nice too, though I do say so myself.
http://www.silverstonesolar.co.uk/SS9999-ProjectDetailsV2-CustomerName.xls
http://www.silverstonesolar.co.uk/SS9999-ProjectDetailsV2-CustomerName.xls