Clarification on sign at London Paddington

[leymoo]

I am fairly aware of some signs that GWR have that aren’t quite accurate eg regarding validity of off peak tickets.
However, this is an interesting one as I believe it’s based on accurate information but communicated badly. It’s also not GWR, but at Paddington.

The husband spotted this sign (photo attached to this post) the other day and the precision of the message concerns me a little.

So if I had a Reading to London Terminals ticket this would be valid to get me to Paddington. But I believe it does not let me get to say, Kings Cross once I have already arrived at Paddington. I think that has been the way for this for as long as I remember. So what gives on the sign?

And bonus points - a fairly snappy alternative that is more accurate and helpful?

 

[swt_passenger]

“National Rail tickets to London Terminals are not valid for onward travel on London Underground services from this station”

 

[ji459]

What's badly communicated?

 

[leymoo]

What's badly communicated?

If you have a sign that says a ticket to London terminals isn’t valid but your ticket to London terminals *is* valid...

 

[ji459]

Well if you're reading the sign you're in London already so...

In any case, you'd be reading the sign at Paddington tube station, which is what's meant by "this station".