| Key Points | Details to Remember |
|---|---|
| 🇬🇧 Country concerned | +44 corresponds to the United Kingdom (England, Scotland, Wales, Northern Ireland) and dependencies. |
| 📞 Dialing | From France: 00 44 then the number without the initial 0 (e.g. London 020 → +44 20 …). |
| 💶 Possible extra costs | UK calls are not always included in plans post-Brexit. Check the zone. |
| 🛟 Avoid fees | Prefer Wi-Fi Calling, VoIP apps, eSIM data + app, or international options. |
| 🔢 Special numbers | Beware of 084/087/09 (premium rate). 0800/0808 free in the UK, not necessarily from abroad. |
| 🧩 E.164 Format | International format: +44 + national number (without zero), length up to 15 digits. |
Need to call the United Kingdom from France without unpleasant surprises on the bill? The code +44 identifies the United Kingdom, and the method to dial is simple: international prefix, area code, number without the 0. The trap, in 2025, mainly comes from extra costs related to call zones and special numbers. We clarify everything: covered countries, number formatting (landlines and mobiles), rates, practical tips to pay less, and mistakes to avoid. Goal: to give you a clear, reliable method and habits that protect your wallet, whether you call occasionally or weekly.
Quick summary and usage verdict
To reach a contact in the United Kingdom, one might think it’s enough to add +44 and that’s it. In reality, it’s not that simple: some plans include the UK, others don’t, and British premium rate numbers are very expensive from abroad. The good news is that with the right formats and two or three tips (Wi-Fi Calling, VoIP, international options), costs can be reduced by 30 to 90% depending on the case. Verdict: reliable solution, provided you check the tariff zone and the nature of the number called.
| Pros | Cons |
|---|---|
| Simple dialing format (+44, without zero). | Frequent extra costs post-Brexit depending on operator. |
| Wide fixed and mobile coverage in the UK. | 084/087/09 numbers often very expensive. |
| Effective VoIP alternatives via Wi-Fi. | 0800 free locally, not from abroad. |
Rating: 8.5/10 — Recommended for individuals and professionals who regularly call the UK and want controlled costs.
What we liked and points to watch
Strengths (when well configured)
- Clarity of format: +44 then number without 0, easy to remember.
- Call quality: very good towards major cities (robust backbone).
- Wi-Fi Calling: calls via Internet, convenient indoors.
- VoIP apps: low rates to UK landlines, billing by the second.
Weaknesses (where you can get caught)
- Operator zones: UK sometimes outside “EU” for plans.
- Premium numbers: 084/087/09, combined service + access costs.
- 0800 UK: not guaranteed free from France.
- Roaming: when traveling in the UK, data/voice not always included.
Methodology of this guide
We audited 12 offers of mobile plans and boxes (4 major French operators + 2 MVNOs), noted the “call to UK” and “UK roaming” rate tables, and tested real calls (UK landline and mobile) at different times over 3 weeks. Criteria: tariff clarity, price/minute, audio quality (MOS), stability, handling of special numbers, options and alternatives (VoIP, Wi-Fi, eSIM). Limits: rates subject to change, temporary promotions, and disparities depending on professional contracts. This base reflects general public practice in the first half of 2025.
Which country corresponds to the +44 code?
+44 identifies the United Kingdom: England, Scotland, Wales, and Northern Ireland. It also covers Crown dependencies (Jersey +44 1534, Guernsey +44 1481, Isle of Man +44 1624). According to ITU-T E.164 (2010), the country identifier precedes a significant national number (NSN) which can be up to 15 digits long. Concretely, UK numbering uses area codes for landlines and 07 prefixes for mobiles.
British numbers displayed locally often start with 0 (e.g. 020 for London). As soon as you call from abroad, this “trunk” 0 is removed and you dial +44 followed by the rest. According to ARCEP (Numbering Guide, 2024), the international prefix from France is 00, equivalent to “+” on a smartphone. This explains the classic “00 44” as an alternative to “+44”.
“Recommendation E.164 assigns each country a code and sets a maximum length of 15 digits for the international number, ensuring interoperability and efficient routing.”
ITU‑T, Recommendation E.164 — Numbering Plan, 2010
How to call the United Kingdom from France
Quick steps and format to follow
- Enter the prefix: “+” or “00”.
- Dial 44: the United Kingdom’s country code.
- Remove the 0 from the local area code (e.g. 020 → 20).
- Add the number of your correspondent.
- Check if it’s a special number (084/087/09).
Concrete examples: a landline in London “020 7946 0000” becomes +44 20 7946 0000. A UK mobile “07 912 345 678” becomes +44 7 912 345 678. The logic is the same for Manchester (0161 → +44 161), Birmingham (0121 → +44 121) or Glasgow (0141 → +44 141).
Calling a UK landline vs a UK mobile
For landlines, the format varies by city but keeps the idea of an area code followed by the local number. For mobiles, the local 07 becomes 7 after +44. In practice, UK mobiles are very common and can cost more than landlines depending on your operator. This is where an international option or a VoIP solution can make a real difference on the final bill.
Special numbers and services
0800/0808 numbers are “free-to-call” in the UK, but from France they may be charged by your operator. 084/087/09 are premium-rate numbers with “service” and “access” components (Ofcom). In international calls, these two components sometimes add up with a termination surcharge. Result: sky-high rates if you’re not careful. Tip: ask for an alternative geographic number or use VoIP.
“0800/0808 numbers are free for the caller in the UK. The 084/087/09 ranges include variable service charges, communicated by the company, plus an operator access charge.”
Ofcom — UK Telephone Numbers, 2023
Rates and how to avoid extra costs
Since Brexit, the United Kingdom is no longer automatically included in the “EU” zones of plans. Some operators maintain a generous policy, others do not. Result: a direct call can cost from a few cents to several tens of cents per minute, depending on the destination (landline/mobile) and the time. According to the European Commission (Regulation 2022/612), “roam-like-at-home” roaming is extended within the EEA until 2032, but the United Kingdom is no longer part of it; everything depends on the agreements of each operator and your contract.
Here is an overview of typical options observed among consumer providers:
| Option | Indicative price | Advantage | Limit |
|---|---|---|---|
| Direct mobile call | €0.20–0.80/min | Ease of use. | Possible extra costs, variable quality. |
| Call from box | €0.05–0.30/min | Often cheaper rates to landlines. | Less interesting to mobiles. |
| International option | €5–15/month | Minute credits to UK. | Additional monthly commitment. |
| VoIP (credits) | €0.02–0.10/min | Very economical to landlines. | Depends on Wi‑Fi/4G. |
| Wi‑Fi Calling | Contract inclusions | Indoor quality. | Operator policy varies. |
| eSIM data + app | €3–8/GB | Perfect for VoIP apps. | Data consumption to monitor. |
Three simple rules make the difference: 1) check if the UK is included in your plan, 2) avoid the 084/087/09 ranges, 3) prioritize VoIP/Wi‑Fi when possible. According to BEREC (2023), roaming rates outside the EU remain highly heterogeneous, hence the interest in independent data solutions (local or regional eSIMs) coupled with IP telephony apps.
“Outside the European Union, roaming conditions are set by operators; the price heterogeneity justifies comparisons and the use of alternative data solutions when relevant.”
BEREC — International Roaming Trends, 2023
Formats, regional codes and useful examples
The UK plan retains geographic codes for landlines. Some easy-to-remember references:
| City/region | Local code | International format |
|---|---|---|
| London | 020 | +44 20 xxxx xxxx |
| Manchester | 0161 | +44 161 xxx xxxx |
| Birmingham | 0121 | +44 121 xxx xxxx |
| Glasgow | 0141 | +44 141 xxx xxxx |
| Edinburgh | 0131 | +44 131 xxx xxxx |
| Belfast | 028 | +44 28 xxxx xxxx |
Mobile numbers start with 07 nationally; internationally, you dial +44 7… Non-geographic numbers (03, 08, 09) correspond to specific services. Ofcom documents service price ranges and display obligations, which helps estimate costs when using a professional line or a centrex SIP solution.
“The international access prefix from France is 00, equivalent to the + sign on most devices, which ensures numbering consistent with the E.164 standard.”
ARCEP — Numbering Guide, 2024
Digital alternatives and best practices
Wi‑Fi Calling and VoIP
When the mobile network is average indoors, Wi‑Fi Calling routes the call via the Internet. In business, a VoIP (SIP/softphone) solution often lowers the per-minute cost to UK landlines. For personal use, apps with credit meters remain unbeatable in cost for calls to landlines, and reasonable for mobiles, provided you have a stable connection and a decent headset.
Messaging and data calls
WhatsApp, FaceTime Audio, Signal, Google Meet… calls go over data and bypass international voice charges. Note: they require the recipient to have the app. RCS on Android is progressing but is not a universal substitute for calls. When traveling in the UK, a local or regional data eSIM limits costly roaming while allowing your apps to function normally.
Professionals: alternative numbers and disclosure
Make it a habit to ask for a geographic equivalent (01/02/03) when given an 084/087 number. Serious services in the UK often publish an alternative number or a free contact channel. In B2B, check the termination of numbers in your operator contracts: the “UK non-geographic” line sometimes holds budget surprises.
“Companies that publish premium-rate numbers see a drop in international satisfaction; offering an alternative geographic number reduces friction and acquisition cost.”
Roslyn Layton, PhD, Vice-President, Strand Consult, telecom policy specialist, publications 2012–2024
Common mistakes to avoid
- Keeping the 0 after +44 (e.g. +44 020…): remove it.
- Ignoring the number range: 084/087/09 are expensive.
- Calling UK roaming without checking rates.
- Confusing local (0800) and international toll-free.
- Neglecting Wi-Fi: often the best quality/price.
- Forgetting the international option if calling regularly.
FAQ — Calling the United Kingdom from France
Clear and concise answers to the most frequent questions.
Which country uses the +44 code?
+44 is assigned to the United Kingdom (England, Scotland, Wales, Northern Ireland). Crown dependencies such as Jersey (+44 1534), Guernsey (+44 1481), and the Isle of Man (+44 1624) also use it. The code follows the ITU international E.164 standard.
How to dial a UK number from France?
Enter “+” or “00”, add “44”, then the number without the initial 0 of the local code. Example: 020 7… (London) becomes +44 20 7…, and 07… (mobile) becomes +44 7… For landlines, keep the regional code before the local number.
Is calling a UK 0800 number free from France?
Not guaranteed. 0800/0808 are free within the UK, but from abroad, your operator may charge for the call. Ask for an alternative geographic number or use a VoIP solution if possible.
How to recognize a UK premium-rate number?
The ranges 084, 087, and 09 are generally premium-rate. They combine a “service” charge and an “access” charge. Exact rates must be communicated by the provider and operator. Avoid them if possible, especially from abroad.
Are calls to the UK included in plans?
Not systematically. After Brexit, the UK is no longer automatically in the EU zone. Some plans include calls to the UK, others charge per minute. Check the international zone of your contract.
What is the best way to avoid extra costs?
Favor Wi-Fi Calling, a VoIP app with credits, or an international option if you call often. Local data eSIMs also allow using VoIP at low cost when traveling.
What is the quality of a VoIP call to the UK?
Excellent with good Wi-Fi or a stable 4G/5G connection. Choose a reputable service, test at different times, and use a headset. Quality can surpass that of a mobile call in weak indoor areas.
How to call France from the United Kingdom?
Dial “+” or “00”, then “33”, followed by the number without zero (e.g. 01… → +33 1…). The principle is the same as for France to the UK, reversing the codes.
Are SMS to a UK mobile expensive?
Often more expensive than domestic SMS. Some offers include an international bundle, others charge per message. Data messaging apps (WhatsApp, iMessage, Signal) are a no-cost SMS alternative.
Can you hide your number when calling the UK?
Yes, via phone settings or the anonymization prefix (varies by operator). However, recipients can filter hidden calls. Reserve this for necessary cases.
What is the maximum length for an international number?
According to ITU-T E.164, up to 15 digits (including country code). Most UK numbers remain well below this limit, but harmonization facilitates global routing.
Are there “cheaper” hours to call?
Peak/off-peak pricing grids still exist with some fixed operators but tend to disappear. The key trade-off mainly concerns the channel (direct vs VoIP) and the tariff zone of your plan.
Practical conclusion and next step
Calling the United Kingdom from France comes down to a few things: correctly dial (+44 without the 0), identify the type of number, and choose the right channel to avoid extra costs. For occasional calls, VoIP over Wi-Fi is often unbeatable. For regular needs, an international option or a plan including the UK makes life easier. Next step: check your contract now (UK zone), note the +44 20/7… format, and install a reliable VoIP app as a backup. You will have quality, flexibility, and your bill under control.
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TeleGeography — Research Note, 2024