I finally managed to locate a ships carpenter that I could
a. afford and
b. trust. So far so good.
The butcher block counter-top is the NUMERÄR in birch, $169 from IKEA.
The drawer unit is a stock Three Drawer Unit from Boat Outfitters in Florida. I will use two of these units to replace the existing wooden drawers. The fit with an inch to spare. I have found Boat Outfitters to be a very good company to deal with and they sort out any minor issues very efficiently.
These are the two units prior to fitting;
I had them adapt one of the units into one normal drawer and one deep drawer to take nesting saucepans.