Slim sightlines, any colour, decades not years. Featuring Smart Alitherm Heritage for conservation projects, Origin's Soho style for modern homes, and the wider Cortizo, Schüco and Origin ranges. We're an approved installer for each.
5-star on Google
2,000+
Homes fitted since 2016
FENSA
Registered installer
10-Year Guarantee
Product + workmanship, insurance-backed
Made in Britain
Designed and built in the UK
Honest Quoting
No commission, no pressure, no surprises
FENSA Registered
Every install fully certified
About aluminium windows
Aluminium gives you what uPVC can’t — sightlines as slim as the steel windows it replaces, large unobstructed glass spans, and a powder-coat finish that holds for decades. Whether you’re replacing the steel windows on a heritage property or pushing the architectural look of a contemporary new build, we have a range that’s honest to it.
The slimmest frame profiles on the market. More glass, cleaner lines, period steel-look detail.
Powder-coated to any colour you can think of. Dual-colour inside and out available on most systems.
Polyamide thermal break technology delivers outstanding energy performance — exceeds Building Regulations.
Aluminium frames won't fade, rot or warp. Up to 20-year manufacturer guarantee on the frame.
Featured aluminium ranges
The signature slim-framed dark aluminium window — equally at home on a Victorian terrace and a modern extension. Two ranges designed specifically for it: Alitherm Heritage for sensitive refurbishment, and Origin’s Soho for contemporary new builds. Plus the wider Origin range below for everything beyond the Crittal aesthetic.
The Crittal replacement
By Smart Architectural Aluminium — designed as a like-for-like aluminium replacement for the steel windows on Victorian and Art Deco buildings. The signature slim profiles and sightlines associated with traditional steel windows, with polyamide thermal break technology underneath.
The Crittal look, modern
By Origin — takes the same Crittal-inspired slim profiles, dark frames and steel-style glazing bars and engineers them for the modern home. Designed to outperform Building Regulations, matched across the whole house — doors, bifolds, French sets and windows — for seamless cohesion.
Beyond the Crittal look
Origin's wider aluminium window collection — casement, picture, bay, French, gable, tilt and turn, bi-folding and sliding — across eight styles. Same British-made engineering and 20-year frame guarantee as the Soho range, with any colour from the powder coat palette.
“The Crittal look has moved from a heritage replacement to a defining feature of modern extensions. We’ll guide you to the right range at survey based on the property and the planning context — bring the property to the showroom and we’ll talk through both ranges side by side.”
— Tariq, Custom Choice
The brands we fit
We’re an approved installer for each. The right choice depends on the property and how you want the spec balanced — we’ll recommend at survey, no commission, no pressure.
European engineering benchmark
Spanish-engineered aluminium with some of the slimmest sightlines on the market. Thermally-broken systems supporting triple glazing for warm year-round comfort, alongside the bifold doors we install for large rear openings.
The German benchmark
The most widely-specified aluminium systems house in the world. Specified where the project demands the highest possible spec — heavily-glazed contemporary new builds, commercial-residential conversions, premium home extensions.
British family-made
A British family business since 2002, winner of the Queen's Award for Enterprise in 2020. Eight window styles all powder-coated in-house in High Wycombe. The Soho style featured above is part of this range.
10-Year Guarantee
Product + workmanship, insurance-backed
Made in Britain
Designed and built in the UK
Honest Quoting
No commission, no pressure, no surprises
FENSA Registered
Every install fully certified
Frequently asked
Aluminium is the right choice if you want slim sightlines, a contemporary look, large unobstructed glass spans, or are matching a Crittal-style heritage replacement. uPVC is the right choice for budget-led specs, flush-sash period detail (Residence Collection), or standard casement replacement. We have both on display in the showroom and will recommend based on your property — no upsell pressure.
Aluminium sits roughly 30-50% above uPVC for an equivalent spec. A typical 3-bed semi runs £8,000–£14,000 in aluminium fitted, vs £4,500–£7,500 for uPVC. The cost is in the engineering — thermal break technology, slimmer profiles, longer guarantees, and the powder-coat finish. Most customers who specify aluminium tell us it was the single best upgrade they made to the house.
Yes — modern thermally-broken aluminium meets and exceeds Building Regulations. The Alitherm Heritage delivers U-Value 1.5 W/m²K, the Origin range hits similar performance. The 'aluminium = cold' reputation is from windows made before the polyamide thermal break was standard. Every system we fit has it built in.
No. Aluminium doesn't rust the way steel does — that's actually one of the main reasons it replaced steel for heritage projects (the Smart case studies you'll see referenced cover refurbishments where the original steel had corroded badly). The powder coat is marine-grade quality, designed to hold for decades without re-finishing.
Yes — that's exactly what the Soho range from Origin is for. The steel-style slim bars and dark frames in any configuration you want, but engineered as a modern aluminium product with current thermal and security standards. Most installs are Jet Black powder-coated, but you can have it any colour. Examples in the showroom.
In their words
Real homeowners across Peterborough, Cambridgeshire and the Fens. Every review is on Google, TrustATrader and the other platforms — go and verify.
We highly recommend Custom Choice Home Improvements. We recently had seven windows and one door replaced, and the entire experience was excellent from start to finish. From our initial contact, Tariq's communication was clear and consistent.
In total we had 8 windows, a front door and French doors fitted. The Custom Choice team came round, took measurements and then sat down with us to show us the full selection of windows and doors. Tony, the person who came round, was fantastic.
We had 9 new windows and special custom arched front door in Agate Grey. Very pleased, cottage looks super now. Tony was brilliant — steered us through with excellent advice from initial visit and progress satisfaction throughout. Thanks also to Brian — surveyor / fitter
Get your aluminium quote
Tell us about the property and which range you’re interested in — Alitherm Heritage, Soho, or the wider aluminium range. Written quote back to you within 48 hours. No commission, no deposit until you’re happy.