I introduced
https://exchangewar.info/ when I created this thread but only noticed that we can filter exchanges with national fiat currency. Limit is this method works with limited fiat currencies listed on the website.
For example, you want to find exchanges for UK, with fiat currency is British pound sterling.
It can help you to find exchanges with trading pairs for British pound sterling. On top of the site, you can choose the fiat currency icon and pick the one for Pound Sterling. It directs you to this page
https://exchangewar.info/coinprice?btc_gbpYou will be given some exchanges for UK.
Another website is
https://blockspot.io/exchange/. With this site, you can use the second column that is for Search Exchange.
Type the nation name, for example United Kingdom, and you will have a list of exchanges. Choose Show from a default value 25 to All to see all available exchanges in the UK.
A last website is
https://cryptoradar.com/How to use this one?
On top of the website, click on the Language icon, then you can choose Country and Fiat currency.
Click on tab exchange
https://cryptoradar.com/exchangesAnd you will be given list of exchanges in the UK.