Hello there, Flim. QuickBooks Pro 2013 has been discontinued for our UK users due to recent changes in accounting and tax regulations.
The versions listed on our Downloads & Updates page span from 2016 to the most recent release. Unfortunately, we do not offer versions from 2013 or earlier, as we cannot ensure they will work properly with modern systems.
Alternatively, you may want to consider switching to QuickBooks Online, which enables you to efficiently manage all your business transactions. You can visit our website to review the available plans and pricing, as well as the features included with each option.
Don't hesitate to reach out if you need any additional assistance with QuickBooks.