Which countries apply the EU rail passenger rights domestically?

I recently discovered that there are some general European rights, similar to those for air travel, that apply to rail journeys within Europe, detailed here. For example, there is quite a powerful-sounding right which says:

If you are told you will arrive at your final destination with a delay of at least 1 hour, you are entitled to cancel your travel plans and request an immediate refund of the cost of your ticket (sometimes in full, sometimes only for the part of the journey not made.)

However, the page also says:

European countries can decide whether or not these rights also apply to domestic trains (urban, suburban, regional, etc.) and international trains that start or finish their journey outside the EU.

So which countries apply these rights domestically? I'm particularly interested in the UK, but answers for other countries would no doubt be useful too.