Loft Conversion Design

I need a professional to create detailed plans to obtain planning permission for a loft conversion. The goal is to transform the loft into an additional bedroom, complete with an ensuite bathroom and ample natural lighting through skylights.

Requirements:
- Additional bedroom layout
- Ensuite bathroom design
- Natural lighting integration (skylights)

Ideal Skills:
- Architectural technician
- Experience with residential loft conversions, particularly with London local authorities
- Proficient in design software
- Strong understanding of building regulations and permits
- Based in London or nearby, preferably a one-man band or small partnership