Why is my speed test slower than my broadband package?
Who this page is for
Consumers who expected their “up to” or headline speed every time and want a structured way to narrow causes.
Plain-English definitions
- Headline speed
- Marketing or summary speed for a product. Your actual speed depends on line, install, and network conditions.
Check in order
- Fair test on Ethernet if possible.
- Repeat off-peak and peak to see a pattern.
- Rule out VPN, heavy background apps, and other devices.
Regulatory context
Ofcom’s materials explain how providers should communicate speeds and what to expect. Use their guidance if you believe your line underperforms against what you were told at sale.
When to compare deals
If the line is genuinely strong but your household has outgrown it, comparing packages on SearchSwitchSave.com or FibreSwitch.com may help once you know it is not only Wi-Fi.
Pulse measures download speed, latency, and jitter in your browser. It does not measure upload speed. For upload, use your provider’s tests or see our upload scope guide.
Compare broadband deals when your line is too small for what you do: BroadbandSwitch.uk, SearchSwitchSave.com, FibreSwitch.com.
UK rights and switching: start with Ofcom’s broadband guidance for personalised speed estimates, switching, and complaints.
Example scenario
You are on “fibre up to 80 Mbps”. Wired tests show low 30s at all times. Wi-Fi aside, you raise it with the provider and reference personalised speed information you were given at sale.
FAQ
Should I always get the headline speed?
Not necessarily. Your contract and Ofcom rules set out what should be measured and explained. Check your documents and Ofcom’s consumer pages.
Does Wi-Fi explain most gaps?
Often, yes. Always separate Wi-Fi tests from wired tests before concluding.
Is “up to” the same as a guaranteed speed?
Not usually. Check your contract and any minimum speed or personalised estimate your provider gave you at sale.
Can my old laptop limit the test?
Yes. Very old hardware, busy CPUs, or bad cables can cap results. Try another device and cable before concluding.
Does testing on VPN always lower the number?
Often, because traffic takes a longer path. Compare with VPN off on the same device when diagnosing.
What evidence should I keep for my ISP?
Dates, times, wired versus Wi-Fi, and a short note of what else was using the connection.
Related guides
- What broadband rights do UK consumers have?
- How do I run a fair broadband speed test at home?
- What do line sync and profile speed mean on broadband?