Conversation so far:
Did they come up with any original work during this time?
The first was "Surrender" which registered on the lower end of the UK Singles Chart at number 81, some 30 years after it was written in 1976.
Was there anything that came in higher on the UK Singles Chart?
some 30 years after it was written in 1976.
The other single was "Latitude 88 North".
How did it do?
CANNOTANSWER.
How well did the reunions do in this timeframe?
Lynne and Tandy reunited again on 12 November 2013 to perform, under the name Jeff Lynne and Friends, "Livin' Thing" and "Mr Blue Sky.
Was this the only time they reunited?
CANNOTANSWER.

Question: What was reissued during this time?
Self-contained rewrite: What did Jeff Lynne and Tandy reissue during 2013?