How much does the UK SMS API cost?

4.65p per SMS to a UK mobile, pay as you go. There are no monthly fees and no contract. New accounts get 25 free credits, and the minimum top-up is £10.

How quickly can I start sending?

Create an account, get an API key, and send your first message in minutes. There is no sales call or approval delay to sign up — accounts are reviewed before sending to keep the platform free of spam.

Which numbers can I send to?

UK mobile numbers (+44) today. Numbers can be supplied in national (07…) or E.164 (+44…) format.

Do you provide delivery receipts?

Yes. Delivery status is tracked per message and available via the dashboard and message history API.

Home › UK SMS API

UK SMS API

Name: Bremlio UK SMS API
Brand: Bremlio
Price: 0.0465 GBP
Availability: InStock

Send SMS to UK mobile numbers over a simple REST API. Get an API key and send your first message in minutes — pay as you go at 4.65p per message, with no monthly fees and no contract.

Bremlio is a UK SMS API operated by Bremlio Ltd. You authenticate with an API key and make one HTTPS request per message; Bremlio delivers it to the UK mobile network and reports the delivery status back. It's built for developers, startups, SaaS products and UK SMEs that want reliable transactional and bulk SMS without enterprise complexity.

Get your API key free

Send an SMS in one request

Authenticate with your API key in the X-Api-Key header and POST the recipient and message. Numbers can be UK national (07…) or E.164 (+44…).

# cURL — send one SMS
curl -X POST "https://api.bremlio.com/v1/messages" \
  -H "Content-Type: application/json" \
  -H "X-Api-Key: YOUR_API_KEY" \
  -d '{"to": "+447700900123", "message": "Your order has been confirmed."}'

Response

{
  "success": true,
  "message_id": "a1b2c3d4-…",
  "provider_message_id": "…",
  "status": "accepted",
  "credits_remaining": 24
}

Python

import requests
r = requests.post(
    "https://api.bremlio.com/v1/messages",
    headers={"X-Api-Key": "YOUR_API_KEY"},
    json={"to": "+447700900123", "message": "Your order has been confirmed."},
)
print(r.json())  # {"status": "accepted", "message_id": "…", …}

UK pricing

Item	Cost
SMS to a UK mobile	4.65p per message
Monthly fee	None
Minimum contract	None — pay as you go
Free credits on signup	25
Minimum top-up	£10

Prices are in GBP and paid by card. A standard SMS is up to 160 GSM-7 characters; longer messages are split into segments and charged per segment. See full pricing.

What you get

Simple REST API — JSON in, JSON out, callable from any language.
Delivery status per message, in the dashboard and via the message-history API.
UK number validation (+44) built in.
Bulk send and message templates for higher-volume, personalised sends.
A dashboard for sending, contacts, reports and API-key management.

Bremlio is UK-focused today (SMS and OTP). It does not currently offer voice or WhatsApp channels.

Frequently asked questions

How much does the UK SMS API cost?: 4.65p per SMS to a UK mobile, pay as you go. No monthly fees, no contract. 25 free credits on signup; £10 minimum top-up.
How quickly can I start sending?: Create an account, get an API key, and send in minutes. There's no sales call to sign up; new accounts are reviewed before sending to keep the platform free of spam.
Which numbers can I send to?: UK mobile numbers (+44), in national (07…) or E.164 (+44…) format.
Do you provide delivery receipts?: Yes — delivery status is tracked per message and available in the dashboard and message-history API.

Send your first UK SMS today.