Removal of load bearing internal wall

Hi. Yes you will need to involve building control as the work will need supervising by a building inspector. Its a good idea to get in touch and have a chat with with them earlier rather than later. You are responsible for this - not the builder. In addition a structural engineer will be required to advise on steel beam strength and sizings. Again you will need to arrange this. Bear in mind they will charge you! The first thing to understand is how the wall above will be supported before the lower masonry is removed. This depends on how, if at all, any ceiling joists are supported by the wall and which way they run. There are various methods of supporting the structure so therefore a builder would need to inspect the job beforehand and provide you with a schedule of work in conjunction with the structural engineer's report. It is difficult to tell you exactly how the job would progress without looking at it first hand. Needless to say the structure above has to be supported, then the lower wall removed. Then a steel beam will be installed sitting on brick pillars either end. The masonry above is then 'packed' and supported from the beam. In short, contact building control, a structural engineer (get a quote) and a builder who has experience in this type of work.