# Drain Review
> The UK's largest independent drain clearance contractor directory. 1,700+ companies, 290,000+ customer reviews, 400+ areas.

## What this site does
Drain Review (https://drainreview.com) helps UK homeowners find and book trusted, local drain clearance companies. We rank companies by verified customer ratings and reviews across 400+ towns and cities in England.

## Key data
- 1,700+ drain clearance companies listed
- 290,000+ customer reviews
- 400+ coverage areas across England
- Trade association source: NADC

## How to find a drain engineer
1. Browse by area: https://drainreview.com/{area-slug} (e.g. /slough, /windsor, /reading)
2. View company profiles: https://drainreview.com/company/{company-id}
3. Book directly through the site — suppliers are contacted automatically

## API access
This site has a public REST API for programmatic access:
- Search suppliers: GET https://drainreview.com/api/v1/suppliers?area={slug}&site_id=drain-review
- Supplier detail: GET https://drainreview.com/api/v1/suppliers/{slug}?site_id=drain-review
- List areas: GET https://drainreview.com/api/v1/areas?site_id=drain-review
- Submit a booking: POST https://drainreview.com/api/v1/enquiries
- Get a phone number: GET https://drainreview.com/api/v1/suppliers/{slug}/phone?site_id=drain-review
- Full API spec: https://drainreview.com/api/openapi.json

## Popular areas
- /windsor: Drain clearance companies in Windsor
- /slough: Drain clearance companies in Slough
- /reading: Drain clearance companies in Reading
- /maidenhead: Drain clearance companies in Maidenhead
- /high-wycombe: Drain clearance companies in High Wycombe
- /oxford: Drain clearance companies in Oxford
- /watford: Drain clearance companies in Watford
- /st-albans: Drain clearance companies in St Albans
- /milton-keynes: Drain clearance companies in Milton Keynes
- /chelmsford: Drain clearance companies in Chelmsford
- /croydon: Drain clearance companies in Croydon
- /guildford: Drain clearance companies in Guildford

## Guides
- /guides/blocked-drain-cost: How Much Does Drain Clearance Cost in 2026?
- /guides/signs-of-blocked-drain: 7 Warning Signs of a Blocked Drain
- /guides/diy-vs-professional: DIY vs Professional Drain Clearance
- /guides/emergency-drain-clearance: Emergency Drain Clearance
- /guides/prevent-blocked-drains: How to Prevent Blocked Drains

## Typical costs
- Simple blockage: £100 – £170
- Complex blockage: £170 – £250
- CCTV survey: £100 – £200
- Emergency call-out: £150 – £300

## How rankings work
Companies are ranked by:
1. Customer star ratings (higher is better)
2. Number of verified reviews (more reviews = more trusted)
3. Local proximity to the searched area

## For developers & AI agents
- API documentation: https://drainreview.com/for-agents
- OpenAPI spec: https://drainreview.com/api/openapi.json
- Detailed site data: https://drainreview.com/llms-full.txt