Bespoke Curtains and Window Treatments in Luxury London Interiors

In a prime London interior, window treatments serve four simultaneous functions: they control light, provide privacy, contribute thermal insulation, and — most visibly — define the character and formality of a room. A pair of full-length interlined curtains in a hand-printed linen, falling from a gilded pole to a generous puddle on the floor, communicates a level of investment and intent that no other single furnishing element achieves quite so completely. Getting them right requires understanding fabric, construction, and installation in combination.

Curtain Types and Their Applications

Full-length interlined curtains:

The standard specification for formal reception rooms, master bedrooms, and dining rooms in a prime London renovation. The curtain is made in three layers: the face fabric (the visible layer), an interlining (a thick, soft layer of bump or domette that gives the curtain body, warmth, and a full, weighted hang), and a lining (typically a sateen cotton, in ivory or off-white). The interlining is hand-padstitched to the face fabric — not glued — in a quality workroom.

Interlined curtains hang differently from unlined or single-lined curtains: they fall in deep, even folds; they hold their shape; they drape with weight and authority. The difference between an interlined and an uninterlined curtain at the same width is immediately visible to any trained eye.

Unlined or single-lined curtains:

Appropriate in more casual spaces — kitchens, garden rooms, children's bedrooms — where the weight and formality of interlined curtains would be inappropriate or excessive. Single-lined curtains in a lightweight linen or cotton hang more softly and have a less formal character.

Sheers:

A sheer layer (silk organza, linen voile, cotton muslin) hung behind or in front of the main curtain provides daytime privacy and filters light without blocking it. In a south-facing London room, a sheer layer reduces solar gain and glare significantly. Sheers can be hung on a separate track behind the main curtain, or on a double track that allows the sheer to be drawn independently.

Roman blinds:

A flat fabric panel that folds up in horizontal sections when raised. Appropriate in kitchens, studies, and secondary rooms where a softer alternative to a hard blind is preferred without the visual weight of curtains. Roman blinds in a prime interior are made with an interlining (to give body and prevent the back of the blind showing through the face fabric) and lined. Good roman blinds have their seams precisely horizontal; the folds align across the full width without sagging or stepping.

Roller blinds:

Appropriate for bedrooms (blackout roller behind curtains), contemporary kitchens, and utility areas. Motorised roller blinds (Somfy, Lutron Palladiom) controlled from the building automation system are standard in a prime automated renovation.

Plantation shutters:

Full-height timber shutters — panels of louvred or solid timber hinged to fold back against the window reveal — provide privacy, light control, and an architectural quality appropriate in period rooms where curtains are not wanted. They are fixed elements, installed by a specialist joiner; motorised louvre control is available for automated systems. Appropriate in ground-floor rooms where privacy is a priority.

Fabric Selection

The face fabric is the most consequential selection in the curtain specification. Key decisions:

Fibre:

• —Silk: The most formal and most expensive curtain fabric. Silk taffeta, dupioni, and silk velvet hang beautifully, have extraordinary light-reflective depth of colour, and are unmatched in formal reception rooms. Disadvantage: silk degrades rapidly in direct sunlight (UV breaks down the protein fibre) — never hang unlined silk in a sunny window without UV-protective interlining and a sheer layer.
• —Linen: The dominant fabric in contemporary prime London interiors. Linen hangs with natural weight, has a textural depth that printed fabrics cannot match, and ages well. Heavyweight plain linens (300–500g/m²) are appropriate for curtains; lightweight linens for sheers and roman blinds.
• —Wool and wool mixes: Warm, durable, fire-retardant by nature. Wool bouclé, wool tweed, and wool flannel are appropriate in libraries, studies, and bedrooms. Flat-woven wool (like a suiting fabric) hangs cleanly; bouclé has more texture and visual interest.
• —Cotton and cotton velvet: Cotton sateen linings are the standard lining fabric. Cotton velvet — particularly cut velvet with a deep pile — is appropriate in dining rooms and formal bedrooms.
• —Printed fabrics: Hand-printed and screen-printed textiles (Colefax and Fowler, Zoffany, GP&J Baker, de Le Cuona) provide pattern and colour. The rapport (pattern repeat) must be considered in calculating fabric quantities — large repeats (600mm+) waste significant fabric in matching across widths.

Suppliers for prime London specification:

• —Colefax and Fowler / Designers Guild / Zoffany / GP&J Baker: The mainstream premium fabric houses; wide ranges, trade discounts for designers, London showrooms
• —de Le Cuona: Belgian luxury fabrics — heavyweight linens, cashmere, wool mixes; understated luxury; used extensively by top London interior designers
• —Pierre Frey / Lelièvre / Métaphores: French premium fabric houses; exceptional quality; less widely known but used by top designers for special commissions
• —Warner House / Watts of Westminster: Historic pattern archives; appropriate for listed buildings and period interiors requiring historical accuracy

Heading Styles

The heading is the top of the curtain — the method by which the fabric is gathered and attached to the track or pole. It determines the visual weight, the amount of fabric required, and the formality of the result.

Pencil pleat:

The standard formal heading — tightly gathered into parallel vertical pleats, created by a heading tape sewn to the top of the curtain. Requires 2–2.5× the track width in fabric. The most commonly specified heading in traditional London interiors; creates a full, densely gathered curtain with even vertical lines.

Pinch pleat (triple pleat):

Three folds of fabric pinched together at regular intervals, with flat returns between groups. More structured and tailored than pencil pleat; appropriate in formal dining rooms and reception rooms. Requires 2–2.5× track width.

Goblet pleat:

A single pleat formed into a cylindrical shape at the top of each pleat group. The goblet is stuffed with interlining to hold its shape. Very formal; appropriate in Georgian and Regency interiors. Requires 2–2.5× track width.

Eyelet (grommet):

Metal rings punched through the fabric header, threaded directly onto a pole. The resulting folds are wide and even. Contemporary in character; appropriate in informal rooms and modern interiors. Requires approximately 1.5× track width.

Wave heading (S-fold):

A modern heading system using a special tape and glider system to create evenly spaced, consistent wave folds. Popular in contemporary interiors for its clean, architectural quality. Requires a compatible track system (Silent Gliss Wave, or similar). Requires 2–2.2× track width.

Tracks and Poles

Poles:

Decorative poles — timber, resin, metal — are visible when the curtain is open and are a design element in their own right. Appropriate where the curtain heading is intended to be seen (pinch pleat, goblet pleat, eyelet). Finials (the decorative end caps) are significant details — the same pole in different finials reads entirely differently.

Suppliers of quality poles: Hallis Hudson (UK, wide range), Silent Gliss (functional poles for heavy curtains), Integra Products, and bespoke metalwork options for one-of-a-kind commissions.

Tracks:

Recessed tracks — fitted into a ceiling recess so they are invisible when the curtain is drawn — are the specification for eyelet, wave, and pencil pleat headings where the track is not meant to be seen. Silent Gliss 6100 and 6840 are the standard specification for heavy curtains; motorisation via a Somfy or Lutron drive is integrated at the track level.

Motorisation:

Motorised curtain tracks (Somfy Glydea, Silent Gliss 5100) integrate with the building automation system (KNX, Lutron, Control4) for scene-based control — curtains drawn at a specific time, at sunrise and sunset, or as part of a cinema scene. Essential in a fully automated prime London renovation; the tracks and motors must be specified before the first-fix electrical is completed.

The Making Process

Bespoke curtains for a prime London renovation are made by a specialist workroom — not a curtain retailer, not a haberdashery, but a dedicated making workroom with experienced seamstresses and a track record in high-end residential work.

The quality distinction is entirely in the making. The same fabric in a quality workroom versus a budget curtain service produces visually and tactilely different results:

• —Hand-padstitching of interlining to face fabric: Not machine-sewn
• —Hand-sewn hems: Blind-hemmed by hand at the base, not machine-hemmed
• —Weights sewn into hem corners and seams: Ensuring the curtain hangs straight and the hem lies flat
• —Careful pattern matching across widths: Large repeat fabrics matched precisely at every seam join
• —Lead time: 8–14 weeks from fabric order to completion for bespoke interlined curtains

London workrooms appropriate for prime residential: Stuart Hands, Wendy Cushing, and other specialist soft furnishings makers working through interior designers. The workroom relationship is typically managed by the interior designer, not the client directly.

Cost Guidance

Bespoke curtain costs for a prime London renovation:

• —Fabric (premium linen or printed cotton): £40–£150/m; large pattern repeats and specialist fabrics (silk, wool) £100–£500/m
• —Making (interlined, per drop metre of finished curtain): £80–£200/m depending on heading complexity and workroom
• —Poles and tracks with installation: £300–£2,000 per window
• —Motorisation (per window): £800–£2,500

A pair of full-length interlined curtains for a 3m-wide window, in a quality linen at 2.5× fullness, at a 3m drop: approximately £4,000–£12,000 supply and make, before installation. A formal principal bedroom or reception room with four windows: £16,000–£50,000 for the window treatment alone.

This is the level of investment appropriate to the overall specification — a prime London interior in which the flooring, joinery, and sanitary ware each cost more than the curtains combined.