Price matters, but a cheap API that returns stale or partial data costs more in failed deliveries and support. Compare value per lookup on PAF-backed data, not just the sticker price.
How to find the best value
- Check the per-lookup rate at your actual monthly volume
- Confirm the data is Royal Mail PAF-backed
- Factor in failed-delivery and support savings from clean data
- Look for a free trial so you can test before committing
Where AutoPostcode fits
AutoPostcode uses transparent volume pricing on official PAF data with a free trial. Read the pricing comparison or view our pricing.
Frequently asked questions
What's the cheapest UK address API?
The cheapest option depends on volume. postcodes.io is free but not PAF-backed; for full PAF address lookup, compare per-lookup rates at your volume. AutoPostcode is designed to stay competitive at scale with transparent pricing and a free trial.
Should I just pick the cheapest?
Not on price alone — confirm the data is Royal Mail PAF-backed and that integration and logging meet your needs, or a cheap tool can cost more in failed deliveries.
Ready to get started?
Add Royal Mail PAF-verified UK address lookup to your site in minutes — start free, no card required.