OK guys. This was part of my job so I hope I know enough to help.
Just letting things go over to nature rarely works, you will end up with the vigorous plants like nettles and dock taking over.
Unless you know that the grass you have is already rich in wildflowers you are much better creating the 'meadow' that you want which needs a bit of work to get started.
To begin a meadow you will either need to A) cut and remove the grass for at least 5 years to get the nutrient levels low enough and then you need to plant wildflower plugs as seeding an existing grass area is a waste of seed.
or B) strip the turf and start with seed.
You also want to use native wildflowers, not some seeds from a garden centre. These are both recommended for Scottish climate.
https://perthshirewildlife.co.uk/celtica-wildflowers/
https://www.scotiaseeds.co.uk/
Here is my own wildflower area.
https://m.facebook.com/story.php?sto...00001679065455