Incorrect County Boundaries in United Kingdom / North West England

Question

I have found some caches in Warrington (most recently on 19/9/2026 alongside some caches in Merseyside), and notice they appear to have counted towards my total for the county of Merseyside. This is incorrect - as shown by the Wikipedia page for Cheshire, the Unitary Authority of Warrington is part of Cheshire not Merseyside. I believe, though can't be sure, that Halton is also wrong. 

Edit: See also the Open Street Map Relation for Cheshire, which also shows the same as below

For completeness, the following Unitary Authority areas are part of Cheshire:

• Cheshire West & Cheshire
• Cheshire East
• Halton
• Warrington

And the following District areas are part of Merseyside (Wikipedia link):

• City of Liverpool
• Sefton
• Knowsley
• St Helens
• Wirral

Answer 1

I'll look into this but it's much easier to actually check these things if you supply a couple of caches that you believe are incorrect.

Comments

Here are some examples as requested:
Caches I've found in Warrington: GC84ECW, GC9V5VQ
Caches I've found in Halton: GC2K3HM, GC7C51T
I believe all of these are showing as Cheshire, and in fact have just gone and looked up Merseyside in the Map NESW/Highest/Lowest tool, and GC6ZJTW is listed as the easternmost in Merseyside even though it is in Cheshire