Totally agree Angelo !
If the UK don't try it they will never know if it works until they do.
Our experience in Scotland is that - because we have had a version of proportional representation up here in Scotland since the very start of our fully devolved government - we already know that it is a MUCH better system than the FPTP system is.
Even the Tories up here, ( who normally hold their conferences in a telephone box somewhere

), have given in, ( after much resistance to it ), to our version of PR, as by using it, it was the only way they were going to get many seats at all in the Scottish Parliament. At the moment and after the last national general election under the FPTP system they still only send
ONE Scottish representative to the UK parliament. For a long time they had
NONE at all.
They only have fifteen seats up here - out of a possible 129 - in the Scottish Parliament and without the use of what we call "the list system" they could only claim three constituency-seats. Twelve of these seats are in existence simply because they are allowed under the non-constituency "list" vote.