Double vanity units for larger en-suites and family bathrooms are something we do regularly. The design challenge is usually making two sinks and the storage between them feel like a single composed piece — which is harder to do well than it sounds.
We also make freestanding bathroom pieces: side tables, taller storage towers, and occasional pieces in painted or natural timber that sit alongside sanitaryware rather than being built in. These are particularly useful in bathrooms where the layout doesn't allow for fully fitted solutions.