Bay windows need more thought than a single flat window. You are effectively dressing three or more panes at angles to each other, and the blind type you choose affects how the sections relate visually, how much light you can control per pane, and how much you spend when multiplying the cost by the number of sections. This guide covers the three approaches we think are most useful for UK bay windows in 2026 - a plain roller for buyers who want to keep costs down across multiple sections, a William Morris roman for rooms where character matters, and a vertical for the widest bays or where a single continuous run is the priority.

What dressing a bay actually involves

A typical UK bay window has three sections: one facing forward and two angled sections to each side. Some Victorian and Edwardian bays have five sections. The angled return sections are almost always narrower than the centre pane, and they sit at somewhere between 30 and 45 degrees from the front face of the house. That geometry creates a handful of decisions before you choose a blind style.

One blind per section or a single run? The standard approach is one blind per section - each measured individually to fit its own recess. This works with any blind type. Vertical blinds can sometimes span a wider run by fitting a track that follows the bay angle, though this depends on the track design and the angles involved. One blind per section gives you the most flexibility and the cleanest finish inside each recess; a wide single-track vertical gives you a more contemporary open feel.

Recess depth matters more in a bay. Bay window recesses are often shallower than main wall windows, particularly on the angled returns. Measure your recess depth before ordering - most roller and roman blinds need at least 5-6 cm of depth behind the bracket position. Vertical blinds can sometimes mount to the ceiling of a shallower recess if the track is low-profile.

Light blocking around the edges. With three or more blinds fitted independently, there will be small gaps at the joins where the sections meet the wall. For a living room where you want daytime privacy rather than blackout, this is rarely a problem. For a bedroom bay, consider whether the angle joins will let in enough light to be worth addressing with draught-strip sealing or a side curtain.

What to look for

Cost per section, not just cost per blind. A bay with three sections means three blinds. A roller priced at £7-£8 from-price becomes an affordable bay solution; a more complex roman at £25-£30 from-price multiplied by three is a different buying decision entirely. Be realistic about total outlay before you fall in love with a fabric.

Blind type and the room's character. Rollers are clean and neutral - they disappear when raised, which suits contemporary interiors and rooms where the window frame is a feature. Romans fold into soft horizontal pleats when raised and add more visual weight at the top, which works well in traditional or period rooms. Verticals have the most practical light-control of the three, but their vane-based look reads as commercial in many residential settings. Match the blind type to what the room already is.

Fabric opacity. Bay windows in living rooms are often street-facing. Light-filtering or dimout fabrics give privacy during the day without making the room feel dark when the blind is down. Blackout is more relevant for a bedroom bay. The Trinity vertical range we cover is described by 247 Blinds as blackout or fire-rated blackout, which makes it more useful than a typical sheer vertical in a situation where you want genuine light control.

Pattern scale. Decorative fabrics with large patterns - William Morris designs are an obvious example - can look odd in a narrow angled return window. The pattern centres itself to the window width, so a 35 cm return panel may cut the motif in an ungainly way. There is no clean fix for this; it is something to accept or to address by accepting that the pattern will not align perfectly across sections, which is visually fine if the fabric is read as decoration rather than as a mirror-repeat feature.

Cord safety. UK regulations (BS EN 13120) require domestic blinds to be cord-safe by design. All the picks in this guide comply. If a bay window is in or near a child's bedroom, prefer cordless or wand-operated options.

Our picks

Best value per window

Roma

at 247 Blinds

A low-cost plain roller from 247 Blinds, sensible when buying three or more.

from £7.15 in 42 colours

Read review →
Best for character
William Morris Roman

William Morris Roman

at Blinds 2go

William Morris romans from Blinds 2go, one per bay section.

from £24.62 in 144 colours

Read review →
Best for a bay run

Trinity

at 247 Blinds

A vertical from 247 Blinds that follows the angles of a wide bay.

from £15.85 in 69 colours

Read review →

Pick details

Best value per window

Roma

at 247 Blinds

A low-cost plain roller from 247 Blinds, sensible when buying three or more.

from £7.15 in 42 colours

Read review →

The Roma from 247 Blinds is a plain polyester roller with a starting price around £7 per blind, which is the main reason it sits in the value slot here. Buying three or four rollers for a standard bay keeps total spend manageable in a way that roman or specialist blinds do not. The range runs to 31 colour options including a solid run of greys - Athens Grey, Cirrus Grey, Fuscous Grey, Rhino Grey, True Grey - alongside neutrals, blues, greens, and a small selection of warmer tones. There are no patterns, which is appropriate for a bay: a plain fabric reads well when repeated across multiple sections because there is nothing to misalign.

As a roller, the Roma packs away almost completely when raised, leaving only the tube visible at the top of the recess. That is the most practical behaviour for a bay window where you want to maximise light in summer. The fabric is the standard polyester found across 247 Blinds' roller range; it is not marketed as blackout, so for a bedroom bay you would want to look at a blackout-rated roller instead. For a living room or dining room bay, however, dimout or plain roller fabric in one of the neutral greys or creams is likely to be all you need.

The case for rollers over romans in a bay largely comes down to that price multiple. If you have a straightforward three-section bay and you are not trying to make a decorative statement with the window, three plain rollers in a matching neutral colour will do the job neatly and leave money for other things.

Best for character
William Morris Roman

William Morris Roman

at Blinds 2go

William Morris romans from Blinds 2go, one per bay section.

from £24.62 in 144 colours

Read review →

The William Morris Roman Blind from Blinds 2go is the pick for a bay where character is the point. William Morris designed textile patterns for the British decorative arts movement in the 19th century, and the range draws on that heritage with familiar botanical patterns - Willow, Acanthus, Pimpernel, Brother Rabbit, Blackthorn, among others - available in colourways that cover deep jewel tones, muted naturals, and softer pastels. With 66 finishes, this is a substantial range; the list includes options like Acanthus Celadon, Fruit Aegean, Honeysuckle and Tulip Velvet Gunmetal, and Pimpernel Sage, which suggests a breadth that runs from period-appropriate to more contemporary muted tones.

Roman blinds work one per bay section. They fold into concertina pleats when raised, which means they stack at the top of the recess and take up a few centimetres of visible window height. For most residential bay windows this is not a meaningful issue, but it is worth measuring if the recess is already short. Cotton and linen-blend roman fabrics have more visual warmth and texture than polyester rollers, and the Morris designs are printed onto fabric with that quality in mind.

The comparison with the Roma roller is essentially a question of what you want the bay to do. The Morris roman will cost considerably more per section - the from-price is around £25 and made-to-measure sizing will push costs higher for larger windows - and it will make the window an explicit decorative focal point. That is appropriate in a Victorian or Edwardian bay, a country house sitting room, or a period conversion where the window is architecturally significant. In a modern new-build with a shallow three-pane bay, it may feel like the wrong register.

On the pattern-alignment point raised above: Morris patterns are dense enough that the eye reads them as overall texture from a few feet away, so minor alignment differences between sections are less visually disruptive than they would be with a geometric or striped fabric.

Best for a bay run

Trinity

at 247 Blinds

A vertical from 247 Blinds that follows the angles of a wide bay.

from £15.85 in 69 colours

Read review →

The Trinity from 247 Blinds is a vertical blind with fabric vanes described by the retailer as blackout or fire-rated blackout depending on the colourway, across a range of 37 finishes. Vanes are the vertical fabric slats suspended from a top track; they rotate to control light and slide to the side to open. Trinity is the pick here for bays where you want a single-track approach or where strong light control is the primary requirement.

Where the roma roller suits a three-pane bay with individual windows, a vertical on a single track that follows the bay angle is an alternative some buyers prefer - particularly for a bay with a wider opening or for a room that reads as more contemporary. The practical trade-off is that a continuous vertical track across a bay requires the angled track joints to be handled correctly in the order, and not all vertical tracks support arbitrary bay angles cleanly. If in doubt, ordering individual vertical blinds per section is the safer approach and still gives you the same blackout fabric.

The 37 finishes cover greys from Dove and Soft Grey through to Oyster Grey, Light Grey, Platinum, Shadow, and a deeper Flint, plus blackout options in warmer tones like Oatmeal and Taupe, and bolder choices in navy, teal, and pink. For a bedroom bay, the blackout rating is the headline feature. For a living room with a wide opening onto a garden, the practical operation across a wide span is the reason to consider a vertical over a roller.

Verticals are often associated with offices, and that is a fair characterisation of their aesthetic in the standard vane sizes. The Trinity's range of colourways means the blind does not have to read as purely functional, but the format is not going to suit every interior. The choice between Trinity and Roma is not primarily a quality question - it is a question of whether your bay suits the clean flat face of a roller or whether the wide-span operation of a vertical fits better.

What we didn't include

We kept this guide to three picks rather than extending it across every blind type for a bay. Venetian blinds - horizontal-slat blinds in aluminium or faux wood - are a reasonable choice for an individual bay window section, particularly in kitchens or rooms where you want precise tilt control of a single pane. We omitted them here because they are harder to coordinate visually across a multi-section bay and because their strongest use case is single-window rooms rather than the multi-pane fitting challenge that makes bay windows a distinct category.

Day-night and zebra-style blinds are another common choice for living rooms. They offer an interesting light-diffusion effect but do not achieve genuine blackout in the staggered position, which limits their usefulness in bedrooms, and the layered-stripe look can become repetitive when multiplied across a bay. The three picks above cover the range of real decisions most buyers face: value and practicality, decorative character, and wide-span light control.