Global Visa Service (GVS) is a Dhaka-based visa-support and international consultancy service working in association with Zillur Rahman & Associates, the law firm led by Managing Director Barrister Zillur Rahman.
Our approach combines specialist immigration-law experience, international public-service experience and structured client support. We aim to make visa and immigration processes easier to understand through professional guidance, careful preparation and clear communication.
How we work

- We are not an embassy, a government visa application centre or a law firm.
- We have no special access to any embassy and cannot influence decisions.
- Every file is reviewed by a second officer, and you approve every answer.
- Prices are published and include VAT.
- Legal advice and appeals are handled by qualified professionals we refer you to.
Our Leadership
Barrister Zillur Rahman
Managing Director, Zillur Rahman & Associates
Barrister Zillur Rahman brings 25 years of experience in immigration law. As Managing Director of Zillur Rahman & Associates, he provides professional leadership and specialist immigration-law expertise to support clients facing complex immigration questions and application requirements.
His work is grounded in understanding the applicable rules, assessing the individual circumstances of each case and identifying appropriate next steps. Legal services are provided through the relevant authorised professional arrangements and within the applicable jurisdiction.
Mohammad Mamunur Rahim, PhD
International Public-Service and Visa-Operations Experience
Mohammad Mamunur Rahim, PhD, was educated in Singapore, Malaysia and United Kingdom who brings 25 years of professional experience at the British High Commission in Dhaka. His experience includes visa authorisation and management-related responsibilities in a high-standards institutional environment.
This background provides valuable insight into administrative procedures, document handling, professional standards, case coordination and the importance of accuracy and discretion. At GVS, he focuses on leadership, client service, operational management and helping clients understand and organise their application requirements.
GVS is independent of the British High Commission and any other government authorities. This biography describes professional experience and does not imply current government affiliation or endorsement.
Our Professional Approach

We bring together immigration-law expertise and practical experience in visa-related operations to offer a structured, client-focused service. Depending on the matter and the agreed scope, clients may receive help with understanding requirements, organising supporting documents, identifying missing information, preparing application materials and coordinating with appropriate professionals.
Where legal advice or representation is required, the matter is handled through the relevant authorised legal professional or firm. The scope of service depends on the destination, the nature of the case and applicable professional rules.
Who We Help
Our intended client groups include visitors and tourists, students, families, professionals, businesses and institutions. We also aim to help clients who need additional preparation after a previous refusal, subject to an initial assessment and confirmation that the requested service is available.
Every case is different. We explain the proposed service, fees, exclusions and responsibilities before work begins.
Our Values
Professionalism: We apply relevant knowledge and experience and involve appropriately qualified professionals where needed.
Integrity: We expect truthful information and genuine documents. We do not assist with false or misleading applications.
Clarity: We explain requirements, service scope, fees and limitations in straightforward language.
Confidentiality: We treat personal information and case details with care and apply appropriate safeguards.
Accountability: We aim to communicate clearly about agreed work, client responsibilities and progress.
Our Commitment to You
A visa application may affect a family reunion, educational opportunity, business visit or important personal plan. We understand the significance of these decisions and aim to make preparation more organised, transparent and manageable.
We cannot guarantee a visa, an appointment or a particular processing time. The relevant immigration authority makes the final decision. Our role is to provide the agreed professional support, explain the process and help clients prepare as carefully as possible.
Start Your Journey with GVS
Begin with our free eligibility check and tell us about your destination, travel purpose and basic circumstances. We will use this information to consider whether the relevant service is available and explain possible next steps.
Global Visa Service — Your Journey, Our Support.
Our case officers are trained on each destination before they take cases, and every file is checked by a second reviewer.
