Structural Calculations for a steel beam

I am having building work carried out on my property to remove a load bearing wall on the ground floor. I require structural calculations for the steel beam being used. The work is due to start on the 10th Jan 2022, is anybody available to come and complete this for me before then? I realize this is last minute, but I was unaware I needed this doing on top of the building control application, which I have completed.

Thanks and regards, Alison Ellery