Married: Oct 2010
Applied from : Southern California, U.S.A
Priority : Yes
Bio-metrics given date : 4th June 2018
Documents mailed to UK : 5th June 2018
Documents received by Sheffield on : 7th June 2018
Email notification of decision: 10th July 2018
Visa and passport back in hand in USA: 13th July 2018
Hope this helps.
Best of luck to everyone still in the process. My heart goes out to you.
Many thanks to all the kind people who've posted advice here.