Seating you design rather than buy
Seating built from units that join together, so you can run a straight bank along a wall, turn a corner, or build an island in the middle of an open space. Modular is what you choose when the shape of the space matters more than the shape of the sofa.
Draw the shape before you count the units
This is the whole discipline of buying modular. Sketch the run you want on the floor plan, then work out which central, corner and end units it needs. Ordering "six units" without that step reliably produces a shape that does not fit the wall it was bought for.
Corner units are the ones people under-order. Every change of direction needs one, and they cost more than the straight sections.
Where modular beats a sofa
Long walls, awkward corners, and spaces that need dividing without building anything. A modular run can define a breakout area in the middle of an open floor in a way a freestanding sofa cannot, because it presents a back to one side and a seat to the other.
The systems
Mawsley uses 90 degree back and inner units specifically so corners meet cleanly rather than leaving a wedge-shaped gap. Brixworth includes modular units alongside armchairs, sofas, booths and matching tables, which is the easier route if the area needs more than one type of seat.
If the goal is quiet rather than seating
Modular seating groups people together. If what the office actually lacks is somewhere to concentrate, privacy booths and pods solve that problem and modular seating does not.