Upholstery and Soft Furnishings in Prime London Interiors: Specification, Fabrics, and Makers

Sofa and Armchair Construction Quality

The quality of an upholstered piece of furniture is determined primarily by what is inside it — the frame, the suspension system, and the cushion fill — rather than the fabric covering it. A cheap sofa in an expensive fabric remains a cheap sofa; a quality piece in a plain fabric remains a quality piece for thirty years.

Frame construction: Quality sofa and armchair frames are built from kiln-dried hardwood (beech, birch, or ash) with corner blocks glued and screwed at all joints. Softwood frames (pine, MDF, or particle board) flex under use, joints loosen, and the frame distorts within a few years. The frame should be rigid when lifted and moved — any flexing or creaking indicates inadequate jointing or material quality.

Suspension: Traditional sprung suspension uses a grid of eight-way hand-tied coil springs (individually knotted at eight points to prevent movement) over a webbing or interlaced jute base. This system produces a soft, resilient seat that recovers completely after use and lasts for decades. It is found in quality British and European upholstery and in some American pieces. Serpentine (zigzag) springs are a more economical alternative — faster to install, entirely acceptable in quality furniture, though less luxurious in feel than a hand-tied coil system. Sinuous wire or webbing alone (without springs) is the most economical suspension, found in volume furniture; it is not appropriate for a prime residential specification.

Cushion fill: The seat and back cushion fill determines the comfort and shape retention of the piece. Options from premium to economy:

• —Feather and down (90/10 or 80/20 feather/down ratio): The most comfortable and most luxurious fill, with a natural loft and a soft, embracing quality that foam cannot replicate. Requires regular plumping; loses some loft over time. Standard for the highest quality British upholstery.
• —Foam core wrapped in feather/fibre (dual fill): A firmer foam core (providing shape and support) wrapped in a layer of feather or high-quality polyester fibre (providing softness and comfort). The most practical premium specification — retains its shape better than pure feather, is more comfortable than pure foam.
• —High-resilience foam: Density and ILD (indentation load deflection) are the key variables. HR40 foam (40kg/m³ density, medium firmness) is the minimum for quality furniture. HR45 or HR50 for seat cushions that will receive heavy use.
• —Dacron/polyester fibre: A wrapped fibre fill that is soft but has limited shape retention; appropriate for back cushions where support is less critical.

British Upholstery Makers

For prime London residential commissions, the British upholstery tradition — represented by a group of makers who work to traditional standards of frame construction, suspension, and hand finishing — produces pieces of a quality that volume manufacture cannot match.

George Smith: The most widely specified quality British sofa maker for the London prime residential market. Deep, generously proportioned, traditionally upholstered with feather-down cushions and sinuous spring suspension on hardwood frames. Extensive range of models from traditional English roll-arm sofas to more contemporary profiles. Custom covers in client's own fabric (COM) or from the George Smith fabric range.

Howard & Sons (now Howard Chairs): London's oldest surviving sofa and chair maker. The classic Howard sofa — high-backed, deep-seated, with a distinctive roll-arm and a loose cushion seat — has been made largely unchanged since the 1820s. Hardwood frames, hand-tied coil springs, feather-down cushions. A benchmark of traditional British upholstery.

Soane Britain: A younger maker that combines traditional British upholstery techniques with a contemporary design sensibility. Well suited to schemes where period authenticity is important but a modern interpretation is preferred.

Custom and bespoke upholsterers: For pieces that need to be dimensioned precisely for a specific space, or where the design requires a specific profile not available from any standard range, a specialist upholstery workshop (Holloways of Ludlow, Stuart Scott, W. Schillig for a European aesthetic) can produce bespoke frames to drawings. The process requires detailed upholstery drawings, fabric specification, and a lead time of 16–24 weeks.

Curtain and Soft Furnishing Workrooms

The quality of curtain making — the precision of the heading tape or pinch pleat, the accuracy of the lining and interlining seams, the consistency of the drop — is as important as the fabric selection. A workroom that produces even, well-pressed pleats with straight seams and consistent drops will make good curtains from modest fabric; a poor workroom will ruin expensive fabric.

What to look for in a workroom: Hand-sewn hems (rather than taped or machine-hemmed), accurately pressed pleats at consistent depths, interlined curtains that hang with a full, even weight, and attention to pattern matching across multiple drops. Ask to see samples of their work in situ, not just swatches.

Lead times: Quality workrooms typically have lead times of 8–16 weeks from fabric delivery to installation. Fabric must arrive at the workroom before production begins; fabric lead times (from the fabric house to the workroom) are typically 4–12 weeks. Total lead time from fabric selection to curtains hung is typically 12–20 weeks — this must be built into the project programme.

Fabric Selection

The fabric specification for upholstery and curtains in a prime London interior is one of the highest-spend and highest-visible decisions in the project. The fabric houses that supply the trade (Colefax and Fowler, Zoffany, Designers Guild, GP & J Baker, Pierre Frey, Rubelli) produce collections that range from classic documentary prints through contemporary abstracts to luxurious weaves and velvets.

Durability ratings (Martindale test): Upholstery fabrics are rated by abrasion resistance using the Martindale test (number of cycles before fabric shows wear). For residential upholstery: minimum 15,000 cycles; 25,000+ cycles for heavily used pieces. Curtain fabrics do not require the same durability rating but must be assessed for light fastness (resistance to fading in sunlight — particularly important for south-facing rooms).

Pattern matching: Large pattern repeats (above approximately 50cm) add significantly to fabric quantity requirements — the repeat must be matched at all seams, and the pattern must be correctly positioned on the piece (centred on the back, consistent across cushion fronts). Calculate fabric quantities with the repeat in mind; a fabric with a 64cm repeat requires 30–40% more fabric than a plain or small-repeat equivalent for the same upholstery coverage.

Natural vs synthetic: For prime residential upholstery, natural fibres (wool, linen, cotton, silk, and blends) are the standard specification. They breathe, they age well, and they have a quality of hand that synthetics cannot replicate. The main practical qualification is that pure silk is delicate and susceptible to marking; a silk/viscose blend provides a similar sheen with greater durability. Performance fabrics (Crypton, Revolution, Sunbrella) are appropriate for family rooms with children and pets — they offer excellent stain and moisture resistance at the cost of some luxury of hand.