15 providers offer 182 broadband deals in Glantwymyn, from £20 a month (£40 after 12 months) and up to 1,600 Mbps. Typical measured speed is 71 Mbps down and 18 Mbps up, 30% below the UK download average. Full fibre is available to 68.3% of homes.
Deals for Glantwymyn (SY20), checked and refreshed daily.
Best value broadband deal in Glantwymyn (SY20)
The best value in Glantwymyn (SY20) on full first-year cost is 4th Utility's 900Mb Full Fibre (24 Months): £264 across year one, about £22 a month. At 900 Mbps it copes with anything a household runs at once.
Best value in Glantwymyn (SY20)
£22/mo
for 12 months, then £44/mo
Cheapest broadband deal in Glantwymyn (SY20)
The cheapest deal in Glantwymyn (SY20) is 300Mb Full Fibre (24 Months) from 4th Utility at £20.00 a month for 300 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. The £20.00 is an intro price that rises to £40.00 a month after the intro window, making the real first-year cost £240. Onestream is essentially level at £20.86 a month.
Cheapest in Glantwymyn (SY20)
£20/mo
for 12 months, then £40/mo
Runner-up on price
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Fastest broadband deal in Glantwymyn (SY20)
The fastest deal available in Glantwymyn (SY20) is Full Fibre 1.6GB from EE at 1,600 Mbps. Zen Internet matches it at the same top speed.
Fastest in Glantwymyn (SY20)
£33.99/mo
rises to £37.99 in March 2027 (+£4)
Runner-up on speed
£45/mo
No rises, no surprises.
Compare broadband deals in Glantwymyn (SY20)
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£23/mo
No rises, no surprises.
£23.99/mo
rises to £27.99 in March 2027 (+£4)
£25/mo
rises to £29 in April 2027 (+£4)
Broadband providers in Glantwymyn (SY20)
15 providers serve Glantwymyn (SY20) including Sky, BT and Vodafone, with EE the fastest at 1,600 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 Glantwymyn (SY20) download speed at 71 Mbps.
Upgrade nudge
Room to upgrade in Glantwymyn (SY20)
Only 7% of the 2,000 connections here are on 300Mbps or faster, even though 68% 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 Glantwymyn (SY20) line runs 71 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 68% of Glantwymyn (SY20), and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Glantwymyn (SY20) have?
Superfast broadband reaches 85% of Glantwymyn (SY20) premises but gigabit only 68%, so around 17% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Glantwymyn (SY20)?
Outdoor 5G reaches 75% of Glantwymyn (SY20), but 3% of homes get no indoor 4G from any network, so a mobile backup here wants a window.
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.
How Glantwymyn (SY20) compares within Powys
Across 18 postcode districts in Powys, by connection count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
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Speed and coverage figures for Glantwymyn (SY20)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.