In the recent 2019 UK election the Scottish National Party(SNP), an explicitly pro independence party, increased their share of seats up to 48 out of 55, a commanding majority.
However, recent polling has shown fairly weak results regarding independence. For example a poll from Progress Scotland showed only 40% support for leave and 51% for stay.There is a wonderful chart on the Wikipedia page which shows generally consistent support for remain though it may be sinking in recent years. Also, check out that page for many more poll results.
I did notice that the SNP only won 45% of the vote meaning this may just be a result of how seats are awarded. However, I find it hard to believe that the 55% of people who voted for all other parties are nearly completely united in the stay cause. Basically, is leave growing in strength as seen in the election results, or is remain still leading as seen in the polls, or am I just way off in my understanding of UK politics?