Here's a couple more.
Late July 1982 Sabena leased OO-SJL (707-329C) to American operator Jet24 , who immediately sublease it to Sunrise Airlines (
afaik) a UK operator.
It's ferried to STN and operated a charter to Orlando.
And that was pretty much it with Sunrise AL.
BEA Airtours flew various ex BOAC B707-436, but it's recorded that they also leased (briefly) a B707-131 (OO-TED) from TEA of Belgium in 1978
What about Air Arctic Icelandic? Did they ever operate in their own right, or did they just fly for other airlines?