There are more Minesweepers than you can shake a stick at around Scotland today.
The Sound of Mull has a few which are Norwegian, Danish & Dutch.
The Firth of Clyde and surrounding areas has a frigate or two PLUS, HMS Dauntless our very own RN destroyer.
HMS Dragon has been known to frequent home waters, she is not traceable at the moment which probably means she is operational.
She used to have a very large red dragon painted on her bows but the MOD said to reduce the size as it was too aggressive, it's a warship, it's supposed to look aggressive.