Check of domestic structural calculation

I have drawn up my extension and have completed the calculations for two number steel beams, one a UC the other a RHS. I would like someone to check the caluclations for me - my main concern is the point load as the UC intersects the RHS at the mid point

The UC is carrying 3m of brickwork above it for the duration

The RHS is carrying this point load, floor joists, brickwork and roof load

I would be able t share the PDF's of the drawings and calculations once appointed