Thanks for you response.

So I went to Reports - Standard Reports - Sales & Customers - Estimate by Customer

I get a list of the Estimates (With other details if I customise or add details).

With Quick Books Online, I can click on the Estimates and get further details of the line items. However I cant get a direct list of the Line Items for each estimate. This is also true with the Export (Using Excel).

Is there a way of getting a report to list out the individual service line items?