Sky broadband promo ends 23 September 2026: BT Full Fibre alternative

Last updated: Wednesday 23 September 2026 (Europe/London).
Next update: when Sky reprints new-customer broadband prices after today’s 23/09/2026 cliff, or when catalogue retires BT product.
By: Switch Editorial Team, Switch Squid Ltd

As of Wednesday 23 September 2026, Sky’s new-customer prices on Superfast 35, Superfast, Full Fibre 75, Ultrafast, Full Fibre 150 and Gigafast are advertised as available until 23/09/2026 — that is today. Soft coverage and Sky’s own broadband footnotes still highlight Full Fibre 150 around £23 a month for new customers with £0 set-up on the promo card and up to £200 switching credit toward leaving fees (eligibility rules apply). We are not shipping a Sky Awin money button — Sky Awin join remains unclear — so the live Get deal path on this page is a verified BT Full Fibre 900 alternative (catalogue product , Awin publisher / merchant 3041), destination-checked to BT’s BT Full Fibre 900 offer affiliate offer. Soft facts stay on sky.com/deals and sky.com/broadband.

Primary Get deal buttons below open BT Full Fibre, not a Sky basket. If you specifically want Sky TV + broadband stacking, read sky.com/deals and order there after a postcode check — that path is editorial soft context only.

What ends today on Sky’s new-customer ladder

Sky’s public broadband footnotes (checked 23 September 2026 on sky.com/broadband) mark new customer price available until 23/09/2026 on:

• Superfast 35 — part-fibre FTTC/SoGEA, average ~35Mbps down / ~9Mbps up

• Superfast — part-fibre, average ~67Mbps down / ~16Mbps up

• Full Fibre 75 — average ~75Mbps down / ~16Mbps up

• Ultrafast — part-fibre G.Fast, average ~145Mbps down / ~27Mbps up

• Full Fibre 150 — average ~150Mbps down / ~27Mbps up (the £23 flash-sale hero in soft press)

• Full Fibre Gigafast — average ~900Mbps down / ~90Mbps up

Some sibling Full Fibre 100 / 300 / 500 cards already showed earlier cliffs (e.g. 16/09/2026) in the same footnote block — do not assume every tile on sky.com/deals still matches today’s cliff. Always re-check the live card and the order summary before you pay.

Sky soft facts vs verified money table

We refuse to invent a Sky catalogue product id or tracked affiliate links. Soft text may send curious readers to sky.com/deals for Sky-specific stacking; conversion clicks attributed from this guide are intended as the BT Full Fibre alternative.

Why the deal button is BT, not “get this Sky deal”

catalogue product is live, status=1, linkDead=false, and the Awin hop (p=36798019354, a=, m=3041) lands on BT’s BT Full Fibre 900 offer affiliate offers page — checked through to checkout again on 23 September 2026.

That means: if you click Get deal here, expect a BT full-fibre journey, not Sky Glass, not Sky Stream, and not a Sky Hub. Super-admin will attribute those clicks as BT. Shoppers who only want Sky should stay on sky.com/deals after a postcode check and treat this article as cliff context.

Who the Sky £23 Full Fibre 150 card was for

Average 150Mbps with healthy upload suits most HD/4K streaming homes, remote work, and school devices without paying gigabit vanity. Soft coverage pitched it as a flash return to a low monthly for new customers, with switching credit helping if your current ISP still has exit fees.

Caveats that still matter on 23 September 2026:

• Availability is premises-specific — Sky states full fibre reach is not universal; run the postcode checker.

• Prices may change during the minimum term; Sky usually lets you leave if a mid-contract rise is announced — read the order summary.

• Router delivery / activation wording on Sky footnotes can still mention fees on some products even when a promo card shows £0 set-up — confirm the checkout total.

• Sky Talk Pay As You Talk at £0pm is often bundled as internet calls on full fibre; alarms and telecare need a compatibility check.

When BT Full Fibre 900 is the smarter alternative

Choose the catalogue BT path when you need gigabit-class headroom (multi-4K, large uploads, NAS sync), when Sky’s 150Mbps is not available at your cabinet/premises, or when you want a checked through to checkout affiliate checkout we can stand behind today. catalogue’s catalogue monthCost on is a feed snapshot — the AFF landing is the live price.

Do not click BT expecting Sky TV Entertainment, Sky Sports, or a Sky Stream puck. Those are separate Sky retail journeys. Likewise, do not paste a bare bt.com URL into catalogue — keep the verified tracked affiliate links.

Switching credit, exit fees and today’s urgency

Sky’s broadband marketing still pushes up to £200 toward leaving fees for eligible switchers. That softens early termination charges but rarely deletes them entirely. Photograph your current contract end date and any exit fee quote before you order anything — Sky or BT.

Because the Sky new-customer price window is labelled until 23/09/2026, waiting until tomorrow is how flash ladders disappear. If Sky is your only acceptable brand, finish sky.com/deals today. If you want a live affiliate alternative we can verify, open the BT Full Fibre 900 button on this page.

FAQ

Does this page sell the Sky £23 Full Fibre 150 deal?
No. It explains the Sky cliff for SEO and shoppers, then points money clicks at catalogue BT Full Fibre 900. Soft facts: sky.com/deals.

Why isn’t there a Sky deal button?
Our Get deal buttons use a tracked affiliate link so we can earn a commission if you buy. That does not change the price you pay. Always check the plan name, data, price and key allowances on the retailer’s site before you pay. Our comparison pages are for browsing — use Get deal when you are ready to buy.

What is this plan?
BT Home Hub 4 with BT Home Broadband Full Fibre 900 — Awin mid 3041, checked on the retailer site to BT Full Fibre 900 offer.

Is £23 still live at my postcode?
Only Sky’s checker can say. National flash prices are not personal quotes.

Are these affiliate links?
Yes for the BT buttons — Awin / mid 3041, verified 23 Sep 2026. Sky URLs are soft informational links.

Should I wait for tomorrow’s Sky reprint?
Not if you need today’s labelled new-customer window. Cliffs expire.

Openreach, postcodes and install reality

Sky Full Fibre and BT Full Fibre both ride Openreach FTTP where available, but enablement is premises-specific. A neighbour on 150Mbps does not guarantee your flat. Landlord wayleaves still block some multi-dwelling installs. Budget engineer time for first-time FTTP; “next day” language usually assumes an active ONT.

Wi-Fi still decides the living-room experience. A 900Mbps package behind a thick Victorian wall can lose to a 150Mbps package with a well-placed mesh node. Test wired before you blame the ISP.

Internal links

Near-tier: 1GB full fibre broadband UK, EE broadband deals UK. comparison page: broadband deals.

Sources: sky.com/broadband footnotes (new customer price until 23/09/2026 on Superfast 35 / Superfast / FF75 / Ultrafast / FF150 / Gigafast); sky.com/deals switching credit marketing; soft press on FF150 ~£23; this plan tracked affiliate links p=36798019354 a= m=3041 checked on the retailer site 23 Sep 2026. No invented Sky catalogue/tracked affiliate links.

Honest limits

We cannot run Sky or BT postcode checkers from this blog. Affiliate disclosure: SwitchSquid earns commission when you use the catalogue BT Awin journey. Soft sky.com links never replace the deal button and never claim to be a Sky affiliate conversion.

Contract length, March rises and Year-1 cash

Sky typically uses a 24-month minimum on fibre broadband cards and warns that prices may change during the term. BT Group brands commonly publish fixed pounds-and-pence March rises on newer contracts. Whichever brand you pick, put activation, router delivery, switching credit (if any), and March steps into the same spreadsheet as the monthly fee.

A £23 Sky month-1 tile can still lose to a slightly higher flat fee if exit fees, TV add-ons, or mid-contract rises stack against you. Conversely, catalogue’s £59.99 BT catalogue figure is not a promise — replace it with the AFF landing before you decide.

Voice, alarms and digital landlines

Full-fibre broadband-only paths often replace the analogue line with digital voice. Monitored alarms, telecare, and some lift lines can fail on a naive switch. Ask the gaining provider for a written compatibility check. Do not cancel the losing provider until voice and broadband are both live.

After the cliff: what to watch next

When Sky reprints prices after 23/09/2026, this guide’s soft figures may age overnight. We will refresh when catalogue retires or when Sky publishes a new labelled new-customer window. Until then, treat today’s cliff as real urgency for Sky shoppers and treat catalogue BT as the only affiliate money path we will destination-verify on this URL.