The Unicolour Cassette is a plain fabric roller blind sold by Blinds By Post, available in 27 colours from £31.87. The cassette housing - a slim top rail that encloses the tube and rolled fabric when the blind is raised - gives it a neater finish than an open-tube roller, and the plain palette is designed to complement rather than compete with a room's other decoration. For buyers who want a clean, tidy roller in a specific colour without paying for a patterned or premium fabric, this range covers the main options.

Who it suits

The cassette format makes the most difference in rooms where the top of the blind is visible when it is raised. Without a cassette, a raised roller blind shows the tube and bunched fabric - acceptable in a utility context but less considered in a room you spend time in. The cassette encloses this entirely, which reads as more deliberate in living rooms, bedrooms, and home offices where the window is a feature rather than just a functional opening.

The Unicolour's opacity class is not stated by the retailer, so confirm whether you are ordering a light-filtering, dimout, or blackout fabric before committing. For a bedroom - particularly from spring into summer when UK mornings get progressively brighter - blackout is the grade that delivers genuine darkness. A dimout fabric significantly reduces light but does not block it fully, which may be enough for a living room or home office but will not satisfy a light sleeper. Verify the specification with Blinds By Post for the colour you have in mind.

For kitchens and bathrooms, a standard polyester roller fabric may not be suitable if the room is prone to steam or grease. If you need a roller in a wet room, check whether any Unicolour variant carries a moisture-resistant or wipe-clean finish before ordering. The retailer is the right source for this information - we cannot confirm the moisture rating from the range information alone.

The cassette format also suits renters or anyone fitting into a shallow recess, as the cassette itself can sometimes reduce the minimum recess depth required compared to a bulkier open-mechanism blind.

The colours

27 colours available

Unicolour Charcoal Anthracite Motorised Blind Uk
Motorised
Charcoal Anthracite from £141.34

The fourteen finishes divide into two broad groups. The first is neutrals and naturals: Beige, Cream, Shell, Taupe, Charcoal, and White. These are the most versatile options in the range and will sit quietly against most wall colours. Charcoal gives a darker anchor where you want the blind to read as a feature; Shell and Taupe sit in the warm-neutral mid-ground.

The second group covers more distinctive tones: Cyan (a clear blue-green), Navy, Red, Chocolate (a deep warm brown), and Glade (a mid-green). These give the range some reach into rooms where a plain neutral would feel unenthusiastic. The three remaining finishes - Escape, Luna, and Rayon - have names that suggest distinctive tones rather than standard colours; assessing them from swatches via the retailer before ordering is worth the step, as names alone do not reliably describe the actual shade.

All variants share the same from-price, so there are no premium-tier options in this range.

Price by your dimensions

Made to measure from £31.87. Check Blinds By Post for the price at your exact window size.

At £31.87, the Unicolour sits at the lower-to-middle end of cassette roller pricing. Cassette rollers typically cost a little more than open-tube equivalents because of the additional housing component, so this from-price is reasonable for the format. Price increases with width and drop; the widget above shows how your specific window dimensions affect the cost.

How it compares

Against plain open-tube rollers at a lower price point, the Unicolour's cassette housing justifies its slightly higher from-price in rooms where overhead neatness matters. Against more elaborate cassette ranges - those with motorised options, textured fabrics, or premium colour matching - the Unicolour holds its ground on cost while offering a practical fourteen-colour selection.

If the look of the tube and rolled fabric when the blind is up is not a concern for you, an open-tube roller in a similar fabric is likely to cost a little less. If light control is your primary driver and the fabric grade for any Unicolour variant turns out to be light-filtering only, it is worth checking a range that explicitly offers a blackout or dimout specification, so you get the performance your room needs.

A note on care

Polyester roller fabrics respond well to regular vacuuming with a brush attachment to prevent dust build-up. Spot-clean marks with a damp cloth and mild soap, working gently to avoid soaking the fabric. Most polyester roller fabrics are not designed to be removed and machine-washed; check the care label supplied with the blind before attempting anything beyond spot-cleaning.

Fittings for this fabric

The same fabric and blind type is sold in more than one fitting:

  • Standard from £16.54 fixed with drilled brackets
  • No-drill (twist-fit) from £27.34 about +£19 on the standard blind clips onto a UPVC frame, no screws
  • Perfect Fit from £96.84 a clip-in frame for UPVC windows and doors
  • Cassette from £31.87 a headrail box for a neater top
  • Motorised from £141.34 remote or app control

No-drill and clip-in fittings suit UPVC windows and renters, but they cap out at the largest window sizes - check the maximum drop before ordering for a tall window.