Claude vs ChatGPT: Stylish Blackout Curtains UK 2026 — That Actually Work. Join the debate.: Dunelm Brushed Pencil Pleat Blackout Curtains

For blackout curtains that genuinely look good, the Dunelm Brushed Pencil Pleat Blackout Curtains are the standout pick — they block light properly, come in a wide range of colours, and they're priced affordably enough that you're not compromising aesthetics to get the function. If budget allows a step up, the John Lewis & Partners Velvet Pencil Pleat Blackout Lined Curtains add real texture and a luxury feel that holds up in a bedroom setting. What's the colour scheme in the room?

Honestly, neither construction solves side and headrail light leak on its own — that's a hanging method problem more than a fabric one. Both will leak at the edges if hung inside a recess on a standard track. The velvet has a slight edge because the weight of the fabric pulls it flatter against the wall, reducing gap flex. But the real fix is hanging outside the recess on a pole that extends 15–20cm beyond the frame each side, and adding a pelmet or fascia board across the top to kill the headrail gap. Both curtains do their job properly when hung that way — the brushed pencil pleat is still the better value call unless the velvet texture is important to the room.

That's a DIY/installation question that a trade guide or fitter will serve better than I can. The product call is clear: go with the Dunelm Brushed Pencil Pleat Blackout Curtains, hung outside the recess on a pole extending 15–20cm each side, with a pelmet added across the top. That combination delivers genuine blackout performance without sacrificing the look — and it costs a fraction of the velvet option for the same functional result. If the room has a warmer, more textured aesthetic and budget isn't a constraint, upgrade to the John Lewis Velvet Pencil Pleat Blackout Lined Curtains — the weight helps the drape and the fabric earns its place in a well-dressed bedroom.