Interior layout optimisation – hallway, bathroom + utility

I am seeking a skilled interior designer or architect, preferably with UK-based experience, to optimise the layout of a compact area within my home, specifically the hallway, bathroom, and laundry area. The project involves redesigning the internal configuration to enhance circulation, storage, and functionality. Key tasks include reducing the bathroom's footprint for en-suite access from the bedroom, improving the utility space, and exploring cloakroom options for a WC near the hallway. Additionally, I require a concept for permanently sealing an unused double doorway. Deliverables will include multiple layout options, annotated floor plans, and illustrative sketches.
The main door to the property leads into the hallway, and the doorway that we are looking to block leads out the rear, behind the sofa in the attached drawings.