Hi @dan382,
Yes, seems activating ssl module solved the problem 
Just one thing, the certificate with 0001 suffix only covers your main domain, the other one covers the main domain and www subdomain so I would use this.
Modify again your apache conf to point the SSL directives to path /etc/letsencrypt/live/bin-depot.co.uk/ instead of etc/letsencrypt/live/bin-depot.co.uk-0001/, restart apache, check if you can access to your site y and then remove the certificate covered by cert name bin-depot.co.uk-0001.
sudo certbot delete
And select the number of the certificate with name bin-depot.co.uk-0001
or if your certbot version is a recent version you can use directly this command:
sudo certbot delete --cert-name bin-depot.co.uk-0001
Cheers,
sahsanu