Country code +44

Sending SMS to United Kingdom

The UK is a mature alphanumeric-sender-ID market with light registration compared to India or the US, but heavy enforcement on consent. The ICO polices PECR actively and fines are public, so the practical constraint on a UK campaign is rarely deliverability — it is whether your opt-in record would survive a complaint.

Before you send

What United Kingdom requires

These are the constraints that decide whether a message is delivered, filtered or blocked — not general best practice.

Requirement 1 of 4: PECR requires prior consent for marketing SMS, with a narrow soft opt-in for existing customers.

Requirement 1 of 4

PECR requires prior consent for marketing SMS, with a narrow soft opt-in for existing customers.

Checked automatically on every message we send to United Kingdom — nothing for you to track by hand.

Networks

Mobile operators in United Kingdom

We deliver to every network below. Route quality is measured per operator, not averaged across the country.

4Networks

EELive route

O2Live route

VodafoneLive route

ThreeLive route

Traffic

What businesses send in United Kingdom

Retail promotions and loyalty campaigns

Needs clear consent and a working opt-out — the requirements above apply directly to this traffic.

Appointment reminders for NHS and private practice

Cuts no-shows more effectively than email — most people notice a text within minutes of it arriving.

Delivery notifications

Keeps the recipient's attention without needing an app open, for the moment they actually care about the update.

Dialling

How to dial United Kingdom

Every part of the number, laid out separately, then the same thing written the way an API expects it.

+Exit

44Country code

7XXX XXXXXXNational number

+44 — +44 7XXX XXXXXX — mobile numbers begin 07 nationally, 7 in E.164.

From abroad, replace your exit code with +, then 44, then the national number — dropping the national trunk prefix if the country uses one (a leading 0 in most, though not in the +1 numbering plan). Store numbers in E.164 (+44…) and they work from any country and any API.

At a glance

United Kingdom by the numbers

The figures below come from public country data and set the context for how much SMS traffic United Kingdom actually carries.

+44

United Kingdom country code

ISOGB / GBR

62,348,447

People

244,820

Area km²

2.49 Trillion

GDP (USD)

Sender ID

How your name appears in United Kingdom

What shows up in the recipient’s inbox, and what has to be true before it can.

9:41

SMSLOCAL

Text Message

Your verification code is 4172. Valid for 10 minutes.

now

Delivered on +44

Sender ID rules for +44

Alphanumeric sender IDs up to 11 characters work without pre-registration, though networks increasingly filter unregistered IDs that mimic banks or delivery brands.

Number format+44 7XXX XXXXXX — mobile numbers begin 07 nationally, 7 in E.164.

Delivers across every major network in United Kingdom: EE, O2, Vodafone, Three.

What people send most: Retail promotions and loyalty campaigns · Appointment reminders for NHS and private practice · Delivery notifications.

Message length: under the standard SMS encoding, a segment typically holds 160 GSM-7 characters, or 70 once a message uses Unicode — Arabic, Chinese, Cyrillic, emoji. Longer messages split into several segments automatically and are billed per segment; exact limits are confirmed for United Kingdom as part of onboarding.

Reference