As UK days lengthen from late March onwards and dawn starts creeping in before 5am, the demand for proper blackout blinds rises sharply - and for good reason. Whether you are a shift worker trying to sleep through a summer morning, a parent dealing with a toddler who wakes with the birds, or simply someone who finds even a sliver of early light disruptive, a well-fitted blackout blind does something no ordinary dimout fabric can match. This guide covers three editor-selected picks across different types and price brackets, and explains what to think about before you order.

What blackout actually means

The word "blackout" is used loosely in the UK blinds market, so it is worth being precise. A blackout fabric is one that is fully opaque to light - hold it up to a window on a bright day and you should see no glow through the material. That is different from a dimout fabric, which significantly reduces incoming light but still transmits a perceptible glow in bright conditions. A heavy dimout might look fine at night but will still allow a warm haze in strong June sun.

The practical implication is that retailers vary in how they apply the term. When the ranges in this guide are labelled blackout, that is the retailer's description of the fabric. We cannot independently test every batch of material, so treat it as the manufacturer's claim rather than a guarantee. If complete darkness matters to you - for a baby's room or a night-worker's bedroom - it is worth reading any customer reviews the retailer publishes, particularly from customers in bright rooms or south-facing windows.

There is a second point that even genuinely blackout fabrics cannot resolve on their own: edge light leak. Even if the fabric itself transmits zero light, a standard roller or pleated blind does not seal the window frame. Light enters around the sides and below the bottom bar. The gap can be small - a few millimetres - but in a very dark room on a bright morning it is noticeable. Combining a blackout blind with side channels, a face-fix installation that overlaps the wall by several centimetres on each side, or a layered curtain is the practical answer. A Perfect Fit frame - a clip-in system for UPVC windows with rubber gaskets - also reduces edge gap because the blind sits close to the glass.

What to look for

Type of blind matters as much as fabric. Roller blinds and pleated blinds are the two most common choices for blackout. A roller blind pulls a single flat piece of fabric down from a tube at the top; clean-looking and easy to operate, it suits most rooms and most window shapes. A pleated blind folds accordion-style as it raises and can carry a thermal backing as well as a blackout lining - useful if you want warmth as well as darkness. Venetian and vertical blinds can achieve near-blackout by closing the slats or vanes tightly, but there are always small gaps between adjacent slats; if complete darkness is the priority, a fabric blackout blind is a more reliable choice.

Weight and fabric quality. A heavier blackout fabric hangs flatter, resists sagging in the centre of wider windows, and tends to be more stable in a slight draught. The entry-level end of made-to-measure blackout rollers uses a lighter-weight coated polyester; it works but can billow slightly on tall drops or wide widths. If you have a large bedroom window, check whether the retailer specifies fabric weight or offers a heavier backing option.

Fitting position and light seal. A blind fitted inside the recess looks neat but typically leaves a visible gap on each side between the fabric edge and the recess wall. A face-fix installation - mounted above the window on the wall, with the blind overhanging the recess on all sides - gives a much tighter seal and is the usual recommendation for rooms where true darkness is needed. If you have UPVC windows and want minimal drilling, a Perfect Fit frame is worth considering; it clips into the window's rubber gasket and sits flush against the glass, dramatically reducing edge leak.

Colour selection and room context. Most blackout ranges come in a wide spread of colours, including white and light neutrals. A white or cream fabric reflects more heat in summer and keeps the window looking bright from outside; a dark fabric absorbs more solar heat in the room. Neither is categorically better - it depends on whether you are managing winter heat retention or summer heat gain, and what the room faces. For a north-facing bedroom, a light neutral is usually sensible; for a south-facing conservatory extension, a lighter or reflective colour helps.

Cord safety in children's rooms. UK regulations require all domestic blinds to be cord-safe by design. Options include cordless operation, wand control, and motorised versions. For any room used by children, cordless or wand-operated is the standard recommendation. Check the retailer's product page for which operation types are available on the specific range you are considering.

Made-to-measure sizing. All three picks in this guide are made-to-measure - you specify width and drop in millimetres and the blind is cut to your dimensions. Measure twice: for a recess fit, measure the recess width and the internal drop; for a face fix, measure the width you want to cover (usually the recess width plus 10-15cm either side) and the drop from where you plan to mount the bracket. Retailers publish minimum and maximum dimensions; check those before ordering if your window is very narrow or unusually tall.

Our picks

Best roller

Trinity (Blackout)

at 247 Blinds

A blackout-lined Trinity roller from 247 Blinds at a low entry price.

from £9.72 in 42 colours

Read review →
Best for choice
Bella (Blackout) Blackout Roller

Bella (Blackout) Blackout Roller

at So Easy Blinds

A wide-palette blackout roller from So Easy Blinds.

from £68.15 in 48 colours

Read review →
Best thermal
Totalshade Complete Blackout Thermal

Totalshade Complete Blackout Thermal

at Blinds 2go

A complete-blackout thermal pleated blind from Blinds 2go for warmth as well as darkness.

from £26.86 in 24 colours

Read review →

Pick details

Best roller

Trinity (Blackout)

at 247 Blinds

A blackout-lined Trinity roller from 247 Blinds at a low entry price.

from £9.72 in 42 colours

Read review →

The Trinity (Blackout) Roller Blind from 247 Blinds is the pick for anyone who wants a straightforward, cost-effective blackout roller without a complicated specification process. The retailer describes the fabric as blackout-lined - a coated polyester backing that blocks light transmission through the material itself. With a from-price that is among the lowest for made-to-measure blackout rollers in the UK market, it suits buyers who need to cover multiple windows or who are equipping a rental property where budget is the main constraint.

What makes the Trinity stand out within this price bracket is the breadth of its colour range. With 41 colour options spanning white, cream, grey, navy, teal, black, green, pink, purple, red, and yellow - as well as named shades like Prussian Blue, Fossil Grey, and Tropics - it covers most colour schemes without requiring an upgrade to a more expensive range. Most blackout rollers at this entry price offer far fewer colours, so the combination of low cost and wide palette is the practical argument for the Trinity.

As a single-layer roller on a tube mechanism, it does not offer the thermal backing of a pleated blind. If warmth retention is as important as darkness - or if you have a particularly cold or draughty room - the Totalshade pick below is the more appropriate choice. But for a bedroom where you want a reliable blackout fabric in a specific colour at a controlled cost, the Trinity is a sound starting point.

One thing to note: 247 Blinds publishes price grids for this range, so you can calculate the exact cost for your window dimensions before ordering. The low from-price applies to very small windows; larger made-to-measure sizes cost proportionally more.

Best for choice
Bella (Blackout) Blackout Roller

Bella (Blackout) Blackout Roller

at So Easy Blinds

A wide-palette blackout roller from So Easy Blinds.

from £68.15 in 48 colours

Read review →

The Bella (Blackout) Blackout Roller Blind from So Easy Blinds earns the "Best for choice" category primarily because of its unusually large palette. With 48 colour options - including named shades like Duck Egg, Havana, Cacti, Grey Whisper, and Portobello - it offers more named finishes than either of the other picks in this guide, and covers a wide range of interior colour schemes from muted naturals through to statement tones.

This matters in practice because blackout roller blinds are frequently chosen for bedrooms, where colour coordination with existing decor is part of the decision. Many blackout ranges are available only in a handful of neutrals or a narrow band of shades. The Bella's 48-option palette means that if you are working with a specific wall colour, a particular headboard, or a scheme that has moved away from the standard grey-white-cream palette, you are more likely to find a close match here than with a range that offers a dozen options.

The from-price for the Bella is higher than the Trinity, reflecting So Easy Blinds' positioning and the broader fabric range. So Easy Blinds does not currently publish a full price grid for this range on their website, so you would need to configure your dimensions on their site to get an exact figure. The type is the same as the Trinity - a made-to-measure blackout roller - so the structural and fitting considerations are identical: single-layer fabric, face-fix recommended for tightest edge seal, available with cord or cordless operation depending on your preference.

If your primary concern is finding a specific colour rather than the lowest possible price, the Bella is the most flexible option in this shortlist.

Best thermal
Totalshade Complete Blackout Thermal

Totalshade Complete Blackout Thermal

at Blinds 2go

A complete-blackout thermal pleated blind from Blinds 2go for warmth as well as darkness.

from £26.86 in 24 colours

Read review →

The Totalshade Complete Blackout Thermal Blind from Blinds 2go is the only non-roller in the three picks and the choice when blackout and thermal performance need to work together. As a pleated blind, it operates differently from a roller: the fabric folds accordion-style as it raises, stacking in neat pleats at the top of the window rather than wrapping onto a tube. The practical difference is that pleated blinds can incorporate a thermal interlining as part of their construction - a layer that improves heat retention in winter and helps manage solar gain in summer.

Blinds 2go describes the Totalshade as "complete blackout" with a thermal backing. The thermal element puts it in the same category of solution as cellular (honeycomb) blinds, where sealed air pockets between fabric layers are designed to reduce heat loss through the window. For a bedroom on an exposed north wall, or a room with older single-glazed windows, this combination of darkness and insulation in a single blind is the practical advantage over a plain roller.

The range offers 19 colours, which is narrower than either roller pick but still covers the common neutrals and pastels - Frost White, Elephant Grey, Cliffside Grey, Navy, Duck Egg, Sage, Olive, Forest, and several warm tones. The palette skews towards softer, more room-neutral shades rather than strong statement colours, which suits the bedroom and nursery context where thermal blinds are most often fitted.

From-price is modest for a pleated thermal blind. As with the Bella, Blinds 2go does not publish a full price grid for the Totalshade on the product page, so you will need to enter your dimensions to get a quote. The pleated mechanism stacks less compactly than a roller when fully raised, so on windows with a shallow recess or low headroom above the glass, check the stacked depth against the available space.

If you are choosing between this pick and the Trinity roller purely on the darkness question, both are described as blackout by their retailers. The Totalshade's argument is the thermal layer - if you are losing heat through a cold bedroom window as well as wanting to block light, it addresses both in one product.

What we didn't include

This shortlist focuses on made-to-measure fabric blinds - rollers and pleated - because these are the formats most people searching for blackout blinds in a domestic UK context will find relevant. A few categories fall outside that scope and are worth acknowledging.

Venetian and vertical blinds can approach blackout by closing slats or vanes fully, but they do not achieve the same completeness as a coated blackout fabric because gaps between adjacent slats allow thin lines of light. For rooms where the aim is complete darkness rather than adjustable privacy, fabric blinds are more reliable. We have not included venetian or vertical options in this guide for that reason.

Electric and motorised blackout blinds are available across several UK retailers. The price step-up is significant - typically three to five times the cost of a comparable manual blind for smaller windows - and they require a power source at the window. They are a practical choice for large, difficult-to-reach glazing or for users with accessibility requirements, but the buying decision is different enough that grouping them with manual blinds in the same shortlist would not serve either audience well.

Ready-made blackout blinds in standard sizes are sold by several retailers and are widely available. They fall outside this guide because the made-to-measure format is the reliable solution for most windows: a ready-made blind that is narrower than the recess leaves larger side gaps and reduces the practical blackout effect. Unless your window happens to match a standard size precisely, made-to-measure is the better choice for a room where darkness matters.