From May 1980: STAR WARS WEEKLY is no more... long live (ahem) THE EMPIRE STRIKES BACK WEEKLY.
Yup: New title, same weekly. The US edition also incorporated Marvel's sequel adaptation within the usual run of the monthly but didn't feel the need to change the overall title to accomodate it. The American edition of ROTJ sidestepped it by floating off into a standalone four-part series in 1983. But here in the UK, the British Bullpen did everything they could to cash-in on the hefty anticipation around the return of the Star Warriors and rebooted the weekly to coincide with the beginning of the adaptation. In contrast with today's every-six-month relaunches, they didn't go as far as restarting with a new Issue one (although they did in 1983).
The fantastic cover art is probably one of the most seen pieces of EMPIRE art. Originally created for the US one-shot magazine, it also poped up here on the weekly, on the UK annual (which was shipped back to the States in limited numbers) and on the paperback-sized edition.