[fiedzia]

Gold is relatively common, it's just that most mines were mined completely or to the point where further exploration was not economically viable, so few were preserved, though many mines that we have been used recently for other minerals did contain some gold in the past.

From first google link (https://www.bullionbypost.co.uk/index/gold/gold-mining-in-th...):

"Gold has been mined in Scotland for over 2,500 years. There was gold mining in Crawford from the early 1500s" - and that's just a few examples.

I recommend reading about or visiting Great Orme if you are interested in mining, it's a copper mine that was in use since bronze age.