Q: Wrong Location

For location the iPod uses the location of nearby routers that are in Apple's database of routers and their location. Thus it appears that Apple's database is incorrect. You do not have to be connected to the router, just within range.

Apple periodically updates their database based on information they obtain from iPhones, The iPhone has to have turned on the option to send info to Apple. No one has found another way to get the location of a router added/corrected.

  You can confirm that by going to well-know place with wifi like Starbucks or McDonalds

Make sure Location Services is enabled on your iPad. If it is, try resetting Location Services using this Apple support article (it's near the end of the article). 

About privacy and Location Services - Apple Support

What exactly shows that your location is in the UK?

Where does the Map locate you?

To my knowledge the Map app will not give you a street address unless you manually added it .

It will give you a dot on the map