Aster & Trujillo

Aster & Trujillo is an Anglo‑Spanish, partner‑led advisory practice headquartered in London’s legal quarter, focused on the tax, legal and accountancy needs of clients with footprints in both the UK and Spain. Operating through fully regulated UK and Spanish teams, the firm delivers a single, bilingual platform for cross‑border structuring, expansion, compliance and dispute‑resistant planning across the two jurisdictions.

The practice is recognised for its ability to join up UK and Spanish rules on residence, corporate taxation and wealth structuring, and for giving commercially‑driven advice that stands up in front of tax authorities and banks on both sides. Matters typically involve multi‑jurisdiction holding and trading structures, relocations under special regimes, complex property and investment portfolios, and long‑term succession strategies for internationally mobile families.

Core practice areas
International tax, wealth and mobility – UK and Spanish personal tax, residence and domicile issues, treaty relief, wealth and succession planning, and cross‑border property and investment structuring for entrepreneurs, executives and family offices. The team regularly coordinates UK and Spanish filings and manages ongoing relationships with tax authorities, ensuring consistent technical positions are taken in both countries.

Corporate, business tax and advisory – design and implementation of cross‑border operating, holding and financing structures between the UK and Spain, including VAT and indirect tax, group reorganisations, business sales and exits, and tax governance for mid‑market and owner‑managed groups. The firm also advises inbound investors on market entry, permanent establishment risk and substance, and provides continuing board‑level support on risk management and regulation.

Spanish tax & accountancy – end‑to‑end Spanish compliance and advisory services, delivered by a fully qualified, regulated team of Spanish tax advisers and accountants. Work ranges from non‑resident property and rental filings to full accounting, payroll and tax management for Spanish entities within UK‑headed groups.

Business immigration & global mobility – UK sponsor licences, Skilled Worker and Global Business Mobility routes, and aligned tax, social security and payroll advice for international workforces moving between the UK and Spain. The firm is frequently engaged by fast‑growing businesses and professional practices to design scalable mobility frameworks that integrate immigration compliance with HR and tax processes.

Corporate services, governance and reporting – incorporations, registered office and company secretarial support, Companies House compliance and ongoing governance. The practice also provides bookkeeping, management and statutory accounts for UK entities and Spanish subsidiaries, with a strong emphasis on consistency of reporting and alignment to local tax rules.

Sectors and clients
Aster & Trujillo acts for engineering and construction groups, technology and online platforms, real estate investors and developers, professional and financial services firms, education providers and sports‑related businesses. A significant proportion of the client base comprises Spanish and wider European corporates entering or scaling in the UK market, and UK and international investors acquiring or relocating assets and operations into Spain.

The firm is particularly well‑placed to advise:

• UK and European SMEs and mid‑market groups building trading or holding structures across the UK and Spain.

• High‑net‑worth individuals and families reorganising cross‑border property, corporate and investment portfolios.

• International businesses managing secondments, remote workers and multi‑jurisdiction payrolls between the two countries.

• Law firms, accountancy practices and private banks seeking a trusted UK–Spain specialist partner for their clients.

Distinctive features
Integrated Anglo‑Spanish platform – a single, bilingual team coordinates UK and Spanish tax, legal and accountancy advice, avoiding the gaps, duplication and conflicting positions that often arise when separate firms are used in each jurisdiction. The practice operates through regulated UK and Spanish entities and collaborates with specialist local providers where additional niche expertise is required.

Partner‑led, client‑centred delivery – senior professionals remain closely involved from initial scoping through implementation and ongoing compliance, with clear, pragmatic advice and transparent, fixed‑fee pricing wherever possible. The firm is used to working with time‑poor founders, boards and internationally mobile individuals, and prioritises accessibility and responsiveness across time zones.

Talent, training and international culture – Aster & Trujillo invests heavily in developing technically strong, bilingual advisers who are comfortable operating in both UK and Spanish regulatory environments. The team combines Big‑Four and City experience with an entrepreneurial culture, and is supported by a growing operational hub that allows it to scale complex cross‑border work cost‑effectively.

From its base in London, the firm continues to expand its UK–Spain platform and wider international network, positioning itself as a go‑to adviser for clients who require sophisticated, bilingual tax, legal and accountancy support across both jurisdictions.