Wow Rob I just found this myself, and then jumped on to post it and found your message, haha

"By early 1810, he was made second-in-command of Portsmouth dockyard and, by the end of the year, was again promoted; this time to the rank of vice-admiral. In 1810 he was appointed to the post of commander-in-chief of the North American Station[1] – his father's old command – which he held during the War of 1812 before relinquishing it in 1813."

So which ensign is a Vice-Admiral, blue or white?