For bespoke mirror work in the City of London, Simmonsinteriorsupply is the trade-ready starting point for designers specifying made-to-order mirrors with tailored dimensions and finishes. For local fabrication and on-site fitting, six verified City of London suppliers round out a practical shortlist.
Your shortlist at a glance:
- Simmonsinteriorsupply — trade-only, made-to-order mirrors with customisable dimensions and finishes; suits luxury residential and hospitality briefs
- Jack's Glass — local merchant with on-site templating capability
- Custom Glass — local supply and fabrication
- DISCOUNT GLASS(HULL) — accessible local shop for cost-sensitive briefs
- Allclear Glass & Glazing — glazing expertise for bespoke framing and trims
- Baldwin Glass — local trade merchant
- Hull Glass Works Ltd — local glass manufacturer at 1 Dalton St
Three things every luxury brief should confirm before shortlisting: glass of appropriate thickness for large single panels, polished or bevelled edge finishing, and coordinated demister wiring by a qualified electrician for bathroom installations.
Table of Contents
- Which City of London suppliers suit bespoke mirror projects?
- How to choose the right supplier and brief them properly
- Simmonsinteriorsupply: a made-to-order alternative for trade designers
- Key takeaways
Which City of London suppliers suit bespoke mirror projects?
| Supplier | Services | Glass thickness | Edge finishes | Demister support | Trade pricing | Service area | Google reviews | Warranty / aftercare |
|---|---|---|---|---|---|---|---|---|
| Simmonsinteriorsupply | Supply, made-to-order | 3 mm–6 mm | Customisable | Coordination available | Trade accounts | UK-wide | — | Bespoke aftercare |
| Jack's Glass | Supply, measure, install | Not publicly listed | Not publicly listed | Not publicly listed | Not publicly listed | City of London | 4.5★ (127) | Not publicly listed |
| Custom Glass | Supply, fabrication | Not publicly listed | Not publicly listed | Not publicly listed | Not publicly listed | City of London | 5★ (77) | Not publicly listed |
| DISCOUNT GLASS(HULL) | Supply, mirror stock | Not publicly listed | Not publicly listed | Not publicly listed | Not publicly listed | City of London | 4.9★ (33) | Not publicly listed |
| Allclear Glass & Glazing | Supply, glazing, install | Not publicly listed | Not publicly listed | Not publicly listed | Not publicly listed | City of London | 5★ (23) | Not publicly listed |
| Baldwin Glass | Supply, fabrication | Not publicly listed | Not publicly listed | Not publicly listed | Not publicly listed | City of London | 5★ (21) | Not publicly listed |
| Hull Glass Works Ltd | Manufacturing | Not publicly listed | Not publicly listed | Not publicly listed | Not publicly listed | City of London | — | Not publicly listed |
Pro Tip: When requesting quotes, send dimensioned drawings, site photographs, exact cutout locations for outlets or sconces, and your preferred installation date. Suppliers can price accurately only when they have all four.

The local City of London merchants above carry varying levels of publicly available detail. Jack's Glass suits small-to-medium bespoke projects where quick local access matters. Custom Glass and Baldwin Glass are worth approaching for fabrication-led briefs. Allclear Glass & Glazing brings glazing capability useful when bespoke framing or trims are part of the design. DISCOUNT GLASS(HULL) at 1–3 Grosvenor St suits cost-sensitive standard mirror supply. Hull Glass Works Ltd at 1 Dalton St is a manufacturing option for projects requiring direct factory sourcing.
Trust signals to verify during vetting:
- Written confirmation of public liability insurance
- Portfolio photographs of comparable luxury installs
- Workmanship warranty in writing
- Sample policy for edge finishes and mirror backings
- Confirmed on-site survey capability before fabrication begins
How to choose the right supplier and brief them properly
Site survey and measurement
The "measure twice, cut once" principle is non-negotiable on luxury installs. Record wall flatness, stud or substrate type, power routes for demisters, and access constraints for single-piece panels. Plan all cutouts for outlets and sconces during the templating stage; attempting these cuts on site risks shattering and compromises the finish. Order panels with factory cutouts wherever possible.
Glass thickness and edge finishing
6 mm glass is the correct specification for large single panels in hospitality and high-traffic residences. It resists visual bowing and delivers the distortion-free reflections luxury projects demand. Thinner panels such as 3 mm or 4 mm are acceptable for small vanity mirrors where weight or access constrains the brief.
Edge processing is both an aesthetic and a safety decision. Ground edges remove sharpness but retain a frosted appearance, suited to frames or J-channels where the edge is hidden. Polished edges give a clean, refined finish for exposed installations. Bevels add a sculptural, faceted quality that reads beautifully in hospitality settings where edges will be touched frequently.
Fixing and adhesive methods
Use neutral-cure adhesive exclusively. Acid-cure silicones corrode the silver backing over time, producing black edge staining that is irreversible. For large panels, combine mirror-safe mastic applied in vertical beads with a bottom J-channel or French cleat as a mechanical backup. Concealed fixings give the cleanest aesthetic; mirror clips are appropriate where future removal is anticipated.

Demister pads must be attached directly to the mirror's foil backing and wired by a qualified electrician. Confirm this coordination with your supplier before fabrication begins.
Pro Tip: The seam precision on a multi-panel installation defines whether it reads as bespoke or patched. Plan seam positions during CAD or templating, not on installation day.
Contract essentials to confirm in writing: lead time and fabrication schedule; deposit and staged payment terms; liability insurance certificate; workmanship warranty period; sample approval process for edge finishes.
Simmonsinteriorsupply: a made-to-order alternative for trade designers

Where local merchants supply and fit, Simmonsinteriorsupply offers something distinct: a trade-only, made-to-order service for designers who need mirrors specified to exact dimensions and finishes from the outset, without adapting a standard product to fit the brief. Every piece is crafted to your specification, whether that means a particular glass tint, a sculptural frame profile, or a finish that echoes the wider interior scheme.
For hospitality and luxury residential projects where the mirror is as considered as any other bespoke furniture commission, this approach removes the compromise. Browse the project gallery to see finished work, then contact the trade team to open an account and discuss your next commission.
Key takeaways
For bespoke mirror work in the City of London, specifying 6 mm glass, polished edges, and neutral-cure adhesive from a trade-capable supplier is the foundation of a luxury-grade installation.
| Point | Details |
|---|---|
| Glass thickness matters | Specify 6 mm for large panels; thinner panels suit small vanity mirrors only. |
| Edge finishing is a safety decision | Polished or bevelled edges are correct for exposed hospitality installations. |
| Adhesive choice is irreversible | Neutral-cure mastic only; acid-cure silicone causes permanent silver-backing damage. |
| Demister wiring requires a qualified electrician | Attach the pad to the foil backing; never leave electrical coordination unconfirmed. |
| Simmonsinteriorsupply | Trade-only made-to-order mirrors with customisable dimensions and finishes for luxury residential and hospitality briefs. |
