GSIG works with institutions, regulators, governments, sovereign wealth funds, and counsel. Engagements begin with a confidential conversation about scope, under engagement letter and confidentiality agreement.
No marketing material, no sales process, no demo cycle. The first call is the work.
Brief intake to schedule an initial call. No sensitive details required at this stage. All submissions are received by GSIG directly and not shared.
Submissions are reviewed within two business days. If the engagement is one we are positioned to take, we will respond directly to schedule a confidential conversation about scope.
If we are not positioned to take the engagement — for conflict, jurisdictional, or capacity reasons — we will reply directly to say so.
For matters requiring confidentiality before first contact, the direct mailboxes below are available.
Each address is monitored by GSIG. Inbound mail is treated as confidential. We respond from the same address received.
GSIG is registered in England & Wales and operates from London.
Meetings are held at the client's premises, at agreed neutral venues, or — for senior or sovereign engagements — at the location designated by the client. Registered office address is provided to clients under engagement letter.
GSIG is led by Simon Jenkins, founder and principal. The firm operates against forensic intelligence infrastructure built and owned in-house, with engagement work conducted directly by the principal in coordination with engagement leads where the scope requires.
Additional engagement leads, forensic analysts, and counsel-of-record are introduced to clients under engagement letter and confidentiality agreement. The composition of the engagement team is scoped to the work.
GSIG works to defined parameters and specific deliverables, scoped under engagement letter and confidentiality agreement, with NDAs and privilege protections in place from the outset.
Engagements are conducted on the client's terms. For sovereign authorities, governments, and sovereign wealth funds, on-site. We fly to you.
Most engagements begin with a confidential conversation about scope. No marketing material, no sales process, no demo cycle. The first call is the work.