No, Woofgang, I'm afraid you've got it wrong by Googling it, and thinking that you know about this stuff. What you've picked up is a FIXED-TERM contract - it isn't the same thing
To be honest, there isn't a difference now in the UK between a permanent contract and a temporary contract, in that after 12 months on a temporary contract, the employee picks up employment rights (protection against unfair dismiss being the main one) and after 2 years continuous employment the employer picks up rights to redundancy pay.
A fixed term contract is something different - of a clearly-defined length. The legislation you found applies when a fixed term contract is not renewed by the employer - after 4 years the employee gets the rights you found by Googling.
What is the context of your question, Sado.