17 providers offer 218 broadband deals in Harbourside, from £16 a month and up to 2,300 Mbps. Typical measured speed is 100 Mbps down and 18 Mbps up, in line with the UK download average. Full fibre is available to 94.4% of homes.
Deals for Harbourside (PO12), checked and refreshed daily.
Best value broadband deal in Harbourside (PO12)
The best value in Harbourside (PO12) on full first-year cost is toob's Home 300: £224 across year one, about £19 a month. At 300 Mbps it copes with anything a household runs at once.
Best value in Harbourside (PO12)
£18/mo
rises to £20 in April 2027 (+£2)
Cheapest broadband deal in Harbourside (PO12)
The cheapest deal in Harbourside (PO12) is Home 150 from toob at £16.00 a month for 150 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. Above the UK average on download.
Cheapest in Harbourside (PO12)
£16/mo
rises to £18 in April 2027 (+£2)
Fastest broadband deal in Harbourside (PO12)
The fastest deal available in Harbourside (PO12) is Home 2300 from toob at 2,300 Mbps.
Fastest in Harbourside (PO12)
£25/mo
rises to £27 in April 2027 (+£2)
Compare broadband deals in Harbourside (PO12)
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£23/mo
No rises, no surprises.
£25.99/mo
rises to £29.99 in March 2027 (+£4)
£23.99/mo
rises to £27.99 in March 2027 (+£4)
Broadband providers in Harbourside (PO12)
17 providers serve Harbourside (PO12) including Virgin Media, Sky and BT, with toob the fastest at 2,300 Mbps.
Ranked by Ofcom complaints per 100,000 customers, fewest first. A down arrow is below the industry average, up is above, and a dash means Ofcom publishes no figure for that provider (usually because it is below Ofcom's 1.5% market-share reporting threshold). A small diagonal arrow shows the past-year trend (↘ improving, ↗ getting worse).
Ofcom records the typical Harbourside (PO12) download speed at 100 Mbps.
Upgrade nudge
Room to upgrade in Harbourside (PO12)
Only 14% of the 15,000 connections here are on 300Mbps or faster, even though 94% can get gigabit.
The faster line is already there. For most of these homes it is the contract holding them back, not the infrastructure.
Is your broadband good enough?
The typical Harbourside (PO12) line runs 100 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 94% of Harbourside (PO12), and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Harbourside (PO12) have?
Superfast broadband reaches 100% of Harbourside (PO12) premises but gigabit only 94%, so around 6% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Harbourside (PO12)?
Outdoor 5G reaches 100% of Harbourside (PO12) homes. Here is how mobile holds up if the line drops.
The two 5G figures differ. “5G availability” is everyday 5G running on the existing 4G core, which is what most phones show. “Next-gen 5G” is standalone 5G: a full 5G network with lower lag, still reaching fewer places.
5G & 4G home broadband
Outdoor 5G covers 100% of Harbourside (PO12), enough for a 5G home-broadband hub to stand in for a fixed line.
How Harbourside (PO12) compares within Gosport
Across 2 postcode districts in Gosport, by connection count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
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Speed and coverage figures for Harbourside (PO12)come from Ofcom's Connected Nations data, current to January 2026. Deal prices are pulled live from providers. Compiled by the FindBroadband team. See how we rank and source our data.