In reply to:
This is also why I have come here for advice as I was planning to jump in with both feet and go for the years contract, as I then do not need to pay the connection charge.
You do not need to pay PlusNet for 12 months up front to avoid paying the connection charge. You will be on a monthly contract and will be charged monthly without needing to pay the connection charge. If you stay for 12 months or more then the connection charge disappears. If you leave within the 12 months then you will need to pay the charge when you leave.