1. Access the hosting control panel via 'My hosting' (https://my.sgis.co.uk/clientarea.php?action=services) and click 'Manage' next to your domain.
2. Click on 'SSL/TLS' under the 'Security' heading
3. Click on 'Activate Free SSL' in 'Free Wildcard SSL Certificate' section
After this has run the SSL will be installed. It can take about 30 minutes for it to fully activate.