I'm from Scotland, went to a Scottish University and have a teenage son who just went through the process...
Highers are taken at the end of 5th year - with the 6th year being used for topping up results if they weren't good enough, acquiring Advanced Highers - which are quite often not really required and going to parties...
Some people go to Uni right after the highers (my wife did this and regretted it) and some go into second year directly with Advanced Highers - but very few people I know do either. Schools certainly recommend against both.
Highers are taken at the end of 5th year - with the 6th year being used for topping up results if they weren't good enough, acquiring Advanced Highers - which are quite often not really required and going to parties...
Some people go to Uni right after the highers (my wife did this and regretted it) and some go into second year directly with Advanced Highers - but very few people I know do either. Schools certainly recommend against both.