This is where ponies should live in the United Kingdom.

Applejack should live around Northern Ireland because there are little towns, small cities and big landfarms

Fluttershy should live with Izzy Moonbow in Wales because there is a LOT of trees so basically a forest which is similar to Evergreen Forest and Bridlewood.

Rainbow Dash should live on Ben Nevis so she could fly from the top to the bottom of the mountain.

Pinkie Pie should live in Flamingo Land because flamingos are pink, there's a lot of parties and loads of rides!

Rarity should live in London with Twilight Sparkle, Zipp Storm and Pipp Petals because there is the Royal Opera House for Pipp and Zipp, lots of fashion for Rarity and there are the best libraries for Twilight Sparkle

Hitch should live in Manchester because he could be the sheriff in Manchester. London will cram a lot of space so thats why I picked Manchester for Hitch.

Finnaly last but not least is Sunny, which she should live in Cornwall because it's familliar to Maretime Bay!