Leon Advisers was founded by Ali Sirti in the United Kingdom. With personal immigration experience and years of professional expertise, we serve clients worldwide, offering trusted guidance for UK visa applications.
Ali Sirti and the firm are regulated by the Immigration Advice Authority (IAA) – formerly known as OISC, ensuring reliable, professional advice.
We understand that immigration and visa matters can be stressful, especially with many visa types requiring case-by-case consideration, which increases uncertainty. Having personally navigated these challenges, we’re more than advisers—we’re your partners in this journey. We approach every case with care and dedication, guiding you through each step to help you feel listened to and supported.
Beyond immigration services, we also provide accounting services as an AAT member and will soon expand to offer mortgage services.
What Sets Us Apart
Personal Experience
We’ve personally navigated the complexities of the UK immigration process, so we understand the unique emotional and practical challenges you may face. This experience allows us to approach each case with empathy, providing personalised support at every stage of your journey.
Competitive Pricing
We believe that expert immigration advice should be accessible to everyone. That’s why we offer transparent, competitive pricing without compromising the quality of our services. Our goal is to provide you with the best possible solutions while ensuring affordability for all our clients.
Proven Expertise
With years of experience handling diverse and complex immigration cases, we have successfully guided both individuals and businesses through a wide range of visa and immigration matters. Our proven history of success demonstrates our commitment to achieving positive results for our clients.
Regulated Advice
As a fully IAA-regulated immigration firm, we are committed to adhering to the highest ethical and professional standards. Our regulated status ensures that you receive accurate and reliable guidance tailored to your specific needs, giving you confidence in your immigration journey.
Check Our Credentials
