Under ~2.3m, move the light off the ceiling: wall lights and lamps carry the room, flush or recessed fittings handle the general layer, and pendants survive only where nobody walks — over tables, islands and bedsides, where a low drop is correct anyway. Then make the room feel taller by lighting the upper walls, not the floor.
Cottage beams at 2.1 metres, terrace bedrooms at 2.3, loft conversions that taper to nothing — a huge share of British rooms simply cannot take the fittings the catalogues are full of. The instinct is to treat this as deprivation. It isn't: low rooms lit at eye level are cosier than tall rooms lit from above, and every technique below plays to that strength.
First principle: the ceiling is not where the light lives
In a low room the ceiling fitting should do the least glamorous job — a general wash — and everything characterful should happen lower down. Wall lights at 1.6–1.7m, lamps at table height, light grazing along a beam: all of it flatters a low room, none of it costs headroom. This is the three-layer formula with the layers squeezed downward, and it is exactly how well-lit pubs and cottages have always worked.
The general layer: flush, semi-flush or invisible
For the ceiling itself, three honest options. A flush fitting — like the Kaos at 8cm deep — gives a designed object with no drop at all. A semi-flush buys a little sculpture where you have 2.4m to play with. And recessed downlights remove the hardware question entirely — trimless plaster-in fittings being the low-ceiling premium answer, since a busy ceiling at close range is the one thing a low room cannot forgive.

Kaos Flush Ceiling Light
Eight centimetres deep, 40 or 50cm across, with a colour-temperature switch on the fitting — a low ceiling's general layer solved in one quiet disc.
Where pendants still belong
Anywhere feet don't go, drops are not just allowed but correct: over a dining table or island the bottom of the shade wants to be 75–85cm above the surface regardless of ceiling height — the dining measurements — and a low ceiling simply means a shorter flex. Compact glowing shades (opal, alabaster) work best this close to eye level because they are beautiful from the side, not just from below.
Making 2.2m feel like 2.5
Height is perceived, and perception follows brightness: light the upper third of the walls and the eye travels up. Uplight wall fittings, a lamp washing a tall bookcase, light raking along the beams rather than hanging off them — each pulls the room's apparent lid upward. The opposite — a bright pool on the floor under a dark ceiling — compresses the room like a hand on its head. And keep the ceiling paint pale and matt; at this range it is a reflector, and you want it a soft one.