Hello Gary Thorpe,
Thank you for using our services.
You can download the external templates archive from your Client.Net account without having a license for Sitefinity. To do so log-in to your account, go to the Downloads
section and download a trial for Sitefinity. The trial is a fully featured version, just without the license file. Once you download a trial you will also have access to additional downloads for the version you are trialing - external templates too.
If you have more questions, please feel free to contact us.
All the best,
the Telerik team