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API · Wholesale · UK partners only

Dare to Be Different.

Our network.
Your brand.

Resell Giant's full-fibre + VoIP + mobile footprint via the wholesale API, the WHMCS plugin, or our white-label reseller portal. Every PHP module we ship is ionCube-encoded — proprietary IP, no readable source, no forks, no licence-key leaks. We do the carrier dance, zero-touch the hardware, and stay out of your customer relationships. You pocket the margin.

Order journey · sandbox Sandbox key
GET/addresses
$ 
200 OK· application/json · X-Sandbox: true

Find the address — every UPRN at the postcode

Simulated session · answers are the API spec's own examples
One of 301 endpoints — see them all
01Why partner with Giant

Four pillars. All real, all measured.

Other wholesale carriers will tell you they're a partner. They're often a supplier with a slide deck. Here's what you actually get when you sign up with us.

Real margins

Full wholesale rate-deck shared with active partners. Multi-tier volume breaks. You mark up what suits your market — we don't enforce RRPs.

Real network access

Openreach, CityFibre, Netomnia, FreedomFibre — multi-network availability via one API call. Plus our own VoiceCloud infrastructure for SIP termination.

Real engineers

Dedicated reseller-tier support. Same UK team — but you skip the retail queue. Direct line to the engineers actually building the platform.

Real introductions

As we grow together, we make formal introductions — to enterprise prospects we can't serve directly, to other resellers in the partner programme, to upstream carriers.

ionCube-encoded modules

Every PHP module we ship — WHMCS, BlackBird, future platform integrations — is ionCube-encoded. Proprietary IP, no readable source, no licence-key leakage, no fork drift. The same protection WHMCS itself uses.

02The wholesale toolkit

Eight integrations. Pick your depth.

From a drop-in WHMCS plugin to direct REST, from a re-skinned customer portal to white-label mobile apps. The whole stack's available — wire as much as your model needs.

Flagship · live in hours

White-Label Broadband Checkout

Sell broadband under your own brand: address-accurate coverage, live WHMCS pricing, Ofcom-compliant One Touch Switching as a credentials field, contracts signed in-flow, card + Direct Debit, provisioning into WHMCS. Your domain, never ours. The 9-month build, already done.

REST · Bearer keys

Reseller API

Availability, ordering, service lifecycle, line tests and fixes, router and SIM control, VoIP estate, leased-line quotes, hardware with zero-touch handsets. JSON in, JSON out. Sandbox keys read your real data and simulate every change.

PHP 7.4 – 8.4 · ionCube-encoded

Giant Reseller WHMCS module

VoIP, broadband, mobile, and Unified RPS in your existing WHMCS, built on the Reseller API. Margin dashboard, reports, Giant invoice payments, bulk import, audit trail — and a broadband page for your customers. ionCube-encoded, maintained by us, free with active reseller terms.

High-performance VoIP

Wholesale Voice

Reseller-tier SIP trunking + hosted seats + DID provisioning on Giant's VoiceCloud platform. Multi-tenant by design, white-label app, real-time billing API. Built different — scales with you.

8 vendors · one API

Unified RPS

Single API + dashboard fronting Yealink YMCS, Polycom ZTP, Fanvil, GDMS, Snom, Gigaset, Auerswald, Panasonic. Multi-tenant, BYO upstream credentials, scoped API keys, bulk import. Stop tab-hopping between eight provisioning portals.

White-labelable

Reseller portal

Order tracking, MAC retrieval, KCI events, customer support escalations. Your branding on the front, our infrastructure behind it.

Coming soon

White-label customer portal

Your customers sign in to your branded portal to manage their broadband / VoIP / mobile. No Giant branding visible to end-users.

Early access

White-label VoIP mobile app

Re-skin the VoiceCloud mobile app with your branding, your colour scheme, your app-store listing. End-users see you, not Giant.

Ship direct

Zero-touch VoIP provisioning

Ship handsets directly to your customers. First plug-in auto-provisions against your account — no warehouse stock, no MAC pre-registration faff.

Shared with partners

Live rate-deck

Per-destination wholesale rates for every UK + international prefix. Updated regularly, exportable to CSV. Build your retail pricing on top.

Active dev

WordPress plugin

Shortcode widgets for your site: postcode availability checker, package grids, rate-deck embed. Drop into any WP theme.

03Who resells with us

Six reseller types. Same wholesale stack.

The customer base mix that actually resells Giant. If you recognise yours, the use-case below is what we typically wire.

MSPs

Bundle Giant broadband + VoIP into your managed-IT contracts. One supplier under the hood, your brand on the invoice.

IT consultancies

Recommend an ISP to clients without losing the account to a third-party. Resell at your own margins, support stays with you.

Boutique ISPs

Build a regional ISP without the carrier-grade capex. Use our network, brand it as yours, scale on tap.

VoIP-only resellers

Sell VoiceCloud / SIP trunking / call bundles under your brand. We do the SBC + termination; you do sales.

Agencies + integrators

White-label connectivity as part of a wider digital-transformation engagement. We're the silent infrastructure layer.

Reseller-of-resellers

Sub-channel partners — your account managers get reseller-tier dashboards; their customers get your branding. Multi-tier reseller hierarchy supported.

04Onboarding

Apply Monday. Selling next fortnight.

Four stages from initial application to first customer live. UK-only — we check Companies House before issuing production credentials. Sandbox keys are self-serve in your client area.

    01Day 0–1

    Application + NDA

    UK Companies House check, then a quick chat to understand your model: pure reseller, MSP, or white-label SaaS. You sign an NDA before we share the rate-deck. We approve UK-only.

    02Self-serve

    Sandbox key

    Generate a sandbox key (test_…) under API keys in your client area. It reads your real data and simulates every change — rehearse the whole order-then-manage flow.

    03~7 working days

    Production access

    Sign the reseller agreement and pay the non-refundable upfront fee. Selling home broadband or phone? Your Ofcom RID code goes on the account. Then your live API key, WHMCS module, and portal access are set up, and you're introduced to your account manager.

    04Week 2+

    First customer live

    Sell your first Giant-powered line. We provision via API. End-customer sees your branding. First margin lands on next invoice.

Sandbox keys are generated in your client area. Production credentials are issued once the reseller agreement is countersigned, the upfront fee is paid, and Companies House confirms.

Before you sign up

Three things up front. No surprises later.

Every partner signs an NDA and pays a non-refundable upfront fee. If you're selling home broadband or phone, you'll need your own Ofcom RID code too, because switching those customers is your job as their provider. Here's what that means.

  1. 01

    Sign an NDA

    We'll ask you to sign an NDA before we share the wholesale rate-deck, commercial terms, or anything not on this website.

  2. 02

    Non-refundable upfront fee

    A one-off, non-refundable upfront fee is payable before production access. It covers our commercial and onboarding work setting you up as a partner. The team confirms the amount with you, in writing, before you commit.

  3. 03

    Your own Ofcom RID code

    Your RID is the code that identifies your business as a retail provider on One Touch Switching. Ofcom issues it: you apply to Ofcom directly. You need one to sell broadband or landline phone to home customers.

One Touch Switching

What it is.

One Touch Switching is how UK home customers move broadband and landline providers. The customer only talks to the provider they're joining; that provider sends a request through the industry hub (run by TOTSCo), the old provider confirms what's being switched, and the old service ends on the day the new one starts. No calling the old provider to cancel. Ofcom made it mandatory for every broadband and landline provider in 2024.

Whose job it is

Yours, not ours. Here's why.

Ofcom puts the switching obligation on the retail provider — the brand with the contract with the end customer. When you resell Giant, the customer is yours, the contract is yours, and so are the switches: requests to and from your customers go through the hub under your own Ofcom-issued RID. We supply the service wholesale; we can't switch customers under our name on your behalf.

05Vs the alternatives

Vs building it yourself. Or going Daisy.

The two real alternatives for a UK wholesale-telco partner: build a carrier yourself (capex-heavy, 18-month time-to-market), or partner with another wholesale carrier. Here's how we stack up against that path.

What you get
Other wholesale routes
Giant
  • UK full-fibre footprint
    Variable
    Multi-network
  • Build vs partner
    Carrier capex
    Zero capex
  • WHMCS plug-in
    DIY
    Drop-in
  • White-label portal + app
    Build your own
    Re-skin ours
  • Zero-touch hardware provisioning
    —
    Yes
  • Direct engineer access
    Tier-3 queue
    Reseller line
  • Volume-tier margin
    Fixed RRP
    Flexible mark-up
  • UK-only restriction
    Variable
    Yes (UK partners only)
  • Onboarding time
    Weeks–months
    Self-serve sandbox key · production ~7 working days
Sandbox keys · test_…

Building something? Rehearse it for real.

A sandbox key reads your real account data and simulates every change — every check runs, nothing is ordered or invoiced. Build the whole integration against what you'll actually ship, then swap in a live key.

06FAQ

Real questions, honest answers.

UK-registered companies only. We check Companies House before issuing production credentials. No personal / sole-trader tier yet (we'd direct you to /business). MSPs, IT consultancies, regional ISPs, boutique VoIP resellers, integrators, agencies — all welcomed. International applications are politely declined.

Our network. Your brand. One contract.

UK-registered companies only. NDA and a non-refundable upfront fee apply. Self-serve sandbox keys, production credentials in ~7 working days. Real engineers, real margins, real introductions to the bits of the industry you're trying to crack.

Real customers

What people actually say.

5.0/5 from 81 customer reviews — same Giant team every one of them dealt with.

See all 81 reviews on Trustpilot

Or leave one of your own — opens Trustpilot in a new tab