I find it weird that people would downvote this, I know you should not complain about it, but this comment is correct. The UK does have a (uncodified) constitution. Also of note; even countries with a codified constitution have parts that are uncodified.

>> There is absolutely a Constitution in the UK, it is simply not codified into a single document. <link>

That's got to be the understatement of (many) centuries. AFAIK the UK constitution isn't even even codified into millions of documents, let alone a "single" one. Saying it's not in a "single" document is like saying my trillions of dollars aren't in a "single" bank account. The number of partitions really isn't the problem with that statement here.

Is there a single human (or even computer program) that could even definitively list all the sentences in this "constitution", let alone an arbitrary citizen who needs to be able to become aware of them to be able to follow them? (Note I'm not asking for interpretation, but literally just listing the sentences.) Could they even do this with infinite time? Is it even possible to have an oracle that, given an arbitrary sentence, could indisputably tell you if it is in the constitution?

Maybe that's asking too much. Forget enumerating the laws. Per your own link: "...this enables the constitution to be easily changed as no provisions are formally entrenched."

If this doesn't itself sound silly, hopefully you can at least forgive people for getting irritated at the proposition that there totally exists a "constitution"... that nobody can point to... and that doesn't actually do the one thing many people want from a constitution: being more entrenched than statutes.

> Also of note; even countries with a codified constitution have parts that are uncodified.

Not sure what countries you're referring to, but at least in the US, this is not the case. There is a single document that is the constitution, and (thankfully, so far) nobody is disputing what words are in fact written on that document. And that document absolutely is supreme to statutes.

Interpretation of the words is obviously left to courts in the US, and courts can interpret it differently changing the effective law, but "constitution" is not a synonym for "effective law", and nobody argues over what the words to be interpreted are. And even those interpretations are still written down!