Tooting You obviously do not follow Scottish politics or you would be aware that the Scottish Parliament has already voted in favour of a second referendum or that the Scottish Greens are also an Independence Party, who together with the SNP form a majority in the Parliament.
As to the English taxpayer footing the bill - there is no such thing as an English Tax Payer, all revenues raised throughout the UK go to the UK exchequer, the Scottish Government under the Barnett formula gets a percentage back to fund devolved services e.g. NHS, education, police.
I'd also like to point out that a majority of Scots want the WMD removed from their Country because of the ever present risk of an accident or attack which would have a devastating effect on the population of Central Scotland, including the city of Glasgow only 40 miles away. It is a fallacy that the presence of the base offers wealth and local jobs, as most of the workforce and naval personnel are not local and actually live elsewhere and remain within the base during their 'tour of duty'. Any slight increase in business for shops, hotels etc. is offset by the loss of income from tourism. Not many people choose to holiday within a few miles of a nuclear facility, even if the scenery is gorgeous.