Replace two wall lights - Electrical job in Birmingham, West Midlands

Job description

We have two old wall lights in our lounge that need replacing. They are very old and once we did try to replace one and the wire was a little too short to connect to the new light fitting so we just had to put the old one in again. They are on opposite walls and we would like advice on whether we can fit new wall lights and if so, what kind, or if the wire needs to be lengthened first to do this. Hopefully the job is quite straightforward! We are have one of the walls replastered on 4th May or thereabouts so need to know if we can replace the lights soon, as otherwise we will plaster over the one fitting and find a different solution.