It looks regency to me, because of the flanking columns and perhaps a bespoke craftsman made it to a clients order. If it's a mahogany veneer, is the inlay detail real or painted? I would think painted for this style. it is a nice serpentine, although rather than being of one style, it may just be as they wanted it. It was commonplace in the 40-50s to have quality furniture made to order as we now do with joinery. queen Anne was popular at his time, and you can see an influence there.

Loving your space and flooring. We recently bought a white unit 2400 long. I had planned to have a cabinet built in at a later stage taking up the whole wall but have now decided that I like the option of having space at the ends for decorative pieces eg: the plant and accent chair. Also there is plenty of storage with the existing unit. I went for white to blend in with the walls to make the floor is more of a feature and I could then add colour accents in the room without it all being too much.

Can't see why it will be a problem??? I assume the top of the window is the right hight align with the bottom of your wall cabinets. Your cabinetmaker will work it out. You will just need to select a range hood before they finish their design.

where are the existing kitchen cabinets and exact position of the sink (and dw?) stove and fridge? ..please include the length of all walls for better understanding of the total space available......but, assuming that the whole end wall is about 3.6m and the existing kitchen cabinets run along the bedroom wall about 3.6m? (with stove sink and fridge?) having matching kitchen cabinets installed under the window with a matching tall 1m wide pantry cabinet in the corner (no more than 60cms deep to allow doors to open without projecting past the corner) would give the best results ...anything else is just a free standing cabinet and with the new cabinets (and new counter and doors for the old kitchen?) you'll have a streamlined new kitchen with three times the storage and counter space with patience and enthusiasm the new cupboards could be made out of flatpac cabinets available in most Hardware stores