Cross-border social media work between Belfast and the Republic of Ireland

Social Partner is a UK social-media agency directory. This article sits alongside our listings of social media agencies across England, Scotland, Wales and Northern Ireland. It is written for readers comparing Belfast agencies that handle cross-border work with the Republic of Ireland.

Use our directory to compare social media agencies in Northern Ireland and across the UK. If you need Belfast agencies that handle cross-border work, use this guide to check data, VAT, advertising and contract questions. If you run an agency, these points can help you prepare a clearer Social Partner listing for clients on both sides of the border.

In the guide below, 'you' means the social media agency. If you are a client, read 'you' as the questions to ask each agency before you shortlist. Agency owners can use the same points to prepare a directory listing and answer client checks.

This guide sits inside the Social Partner UK social-media agency directory. Use the cross-border checks to compare Belfast agencies with other UK agencies in our listings. The same points help an agency write a clearer directory entry, so clients can see how it handles Northern Ireland and Republic of Ireland work before they shortlist.

What to take away

Post-Brexit data flows between Belfast and the Republic of Ireland

Since the UK left the EU, personal data moving from the Republic of Ireland into Northern Ireland is an international transfer. The EU's adequacy decisions for the UK were adopted on 28 June 2021. The European Commission extended them to 27 December 2025.

Check the Commission's adequacy page for any later implementing decision before relying on adequacy for a new transfer.

For a Belfast social media agency, the practical issue is where data sits. If you run a campaign for a Dublin client and store audience lists on a UK server, that is a restricted transfer under EU rules unless a safeguard applies.

The UK side is clearer. The Data Protection Act 2018 sets the statutory basis for processing, alongside UK GDPR. The ICO publishes UK GDPR guidance and resources for lawful processing across jurisdictions.

You also need to know your role. Are you a controller, a processor, or a joint controller with the client? That answer decides who signs what and who answers a subject access request.

Most Belfast agencies working cross-border use the EU Standard Contractual Clauses as a backstop. If the Irish client is the controller and your agency processes data for it, Module Two (controller-to-processor) applies. If your agency decides why and how data is used, Module One (controller-to-controller) applies.

A transfer impact assessment must cover the data categories and purposes. It must also cover the destination's laws on public authority access, the safeguards in place, whether those safeguards provide essentially equivalent protection, any supplementary measures, and a review date.

What changes for consent

Consent for marketing to Irish residents must meet EU GDPR standards, which are stricter on granularity and withdrawal. A single opt-in for all channels rarely passes.

If a campaign uses lookalike audiences, document the lawful basis for the source data.

VAT and cross-border invoicing for Northern Irish agencies

VAT treatment for cross-border work depends on who you bill and what you sell. Social media management is a service, so place of supply rules apply.

If you invoice a business client in the Republic of Ireland, the supply is generally outside the scope of UK VAT under the reverse charge. The Irish client accounts for VAT at their local rate.

You still need to check the client is VAT registered and keep their VAT number on file. Without it, HMRC may treat the supply as standard rated.

If you invoice a private individual in the Republic of Ireland, the rules differ. The standard Irish VAT registration thresholds are €40,000 for services and €85,000 for goods. A UK agency with no establishment in Ireland may need to register regardless of turnover, so check Revenue's rules for your supply.

Post-Brexit data flows and VAT sit alongside each other in the paperwork. Get both wrong and the invoice is the first place an auditor looks.

Invoicing details that matter

A compliant Irish VAT invoice should show your agency name, address and UK VAT number, and the Irish client's name, address and VAT number. It should also show a unique invoice number and date, a description of the services, the place of supply as Ireland, and the total.

The VAT line should read 0% with the wording 'Reverse charge: VAT to be accounted for by the recipient. Article 196, Council Directive 2006/112/EC.'

If you use a Belfast social media agency accountant, ask them to review the first three cross-border invoices. After that, the pattern is repeatable.

Advertising rules and bodies clients must check

Advertising rules are not identical on both sides of the border. Northern Ireland campaigns follow the CAP Code, enforced by the Advertising Standards Authority.

Republic of Ireland campaigns follow the Code of Standards for Advertising and Marketing Communications, enforced by the Advertising Standards Authority for Ireland. The Competition and Consumer Protection Commission also has a role in misleading claims.

A worked example is alcohol. CAP Code rule 18.5 says anyone shown playing a significant role in alcohol marketing must be, and must appear to be, over 25. The ASAI Code's alcohol section (section 8) does not set an equivalent over-25 rule; it focuses on under-18 appeal and excessive consumption.

A campaign using a 22-year-old model for an Irish audience may pass ASAI scrutiny but breach CAP Code rule 18.5 if it also runs in Northern Ireland.

EU online platform rules also affect social media operations. The Online platforms | Shaping Europe's digital future page sets out the framework that platforms must follow, which in turn shapes what agencies can publish.

The EU Digital Services Act (Regulation (EU) 2022/2065) adds concrete duties for agencies scheduling content for Irish users.

If you schedule ads on a very large online platform, you must declare who paid for the ad and the targeting parameters through the platform's ad repository.

You must not target ads to minors using profiling. You must not use special category data for targeting.

You must also follow the platform's notice-and-action and appeals processes.

Before you sign, check the CAP Code, which the ASA enforces, and the UK regulations before you sign page so the compliance basics are covered on the UK side.

Where the CAP Code and Irish rules diverge

Comparative claims are treated differently. Irish rules can be stricter on price comparisons and special offers.

Influencer disclosure is another gap. Both regimes require it, but the accepted wording and placement differ.

Running social media management across two jurisdictions

Daily social media management across two jurisdictions is an operations problem before it is a legal one. You need one calendar, two rule sets and a clear owner for each market.

Start with a market map. Note which platforms are used in each market, which languages appear, and which posts are cross-posted.

Then set a review gate. Anything that targets Irish users gets a second check against Irish codes before scheduling.

Agencies that skip step two often find the client owns an account they did not know about. That becomes a data problem later.

Tools and access

Platform access should be role-based. Do not share passwords across borders.

Use two-factor authentication and log who has admin rights. If a contract ends, you need a clean handover.

Contracts, consent and reporting for cross-border clients

Contracts, consent and reporting are where cross-border work is won or lost. A vague agreement is expensive to fix after a dispute.

Name the governing law and jurisdiction. Belfast agencies often choose Northern Ireland law, but an Irish client may push for Irish law. Either is workable if it is written down.

Set out data roles: who is controller, who is processor, and what each may do with audience data. Add a breach notification clause with a clear timeline.

Consent needs a paper trail. Record the wording used, the date, and how withdrawal is handled.

Reporting should show reach, engagement and spend per market. Irish clients often want separate figures for the Republic, not a combined UK and Ireland total.

Commercial contracts need a clauses checklist, and cross-border work adds data transfer, VAT and jurisdiction clauses to that list. The same rules and ethics apply on the UK side, so keep the two documents aligned.

A short pre-launch checklist

Run this checklist before the first post goes live. For data protection, align your records with the ICO and the Irish Data Protection Commission, and keep data protection without blind spots as the working reference.

Common questions