I am having problems accessing any FTP sites through my sky unlimited broadbad connection. everything was fine until a week or two ago, but now FTP fails.

I have a VPN connection to connect to my work network when working remotely from home, and when this is connected FTP works fine (as it goes via my works network)

I contacted sky, but was basically told they don't handle FTP support problems, but they will pass it over to the other tech team who may look into putting something into the next router firmware update!

Is anyone else having problems? (I saw one thread similar to this, but that concerned the connect service not the LLU option)