If you are having problems downloading a file from this site (because of firewall or group policy restrictions), you can try this nifty trick.
Say the file you want to download is called ABC.ZIP, then you would ordinarily have used a link such as this: "https://downloads.s-d-s.co.uk/ABC.ZIP" which would normally be blocked. If you change this link and replace the last forward slash with a questionmark, you may be able to download the file, thus try this instead:-

 https://downloads.s-d-s.co.uk?ABC.ZIP

 

Having problems with SSL?

Sometimes you may be prevented from downloading files over a secure link, so you may have some luck by changing "https" to "http" (or vice versa) at the start of the link. Thus you can try any one of the following four links:-