A four-times daily service between LHR-LBA will commence on December 9th.

Source:http://www.yorkpress.co.uk/news/9784163.BA_brings_direct_Heathrow_flights_back_to_regional_airport/

Could this move also perhaps see the return of LHR-MME flights too?

I’d imagine MME is too close to NCL and an overlapping catchment area. Sad though, I remember flying frequently on BM Viscounts on that route, fantastic!