Robert Young said:They can’t be very common in Lanarkshire.
No, I wouldn't have thought so. There are occasional reports of them being seen in other parts of England but I don't know about Scotland. They are popular as caged birds so yours might be an escapee.
Looks like they have been nearby for a while not that I have seen any! www.glasgowlive.co.uk/.../heres-colourful-wild-parakeets-been-18196337
https://www.bbc.co.uk/news/uk-scotland-47911103