To visit the UK attendees may require a visa. To see whether this applies, please visit the UK Government’s page.
Attendees can come to the UK as a Standard Visitor for up to 6 months without a visa, but can only do certain business or academic activities, for example go to a conference or a meeting.
Attendees cannot do paid or unpaid work for a UK company or as a self-employed person, do a work placement or internship, or sell directly to the public or provide goods and services.
If you do need a visa for a holiday, a business trip or meeting, or to do a short course of study, attendees should apply for a Standard Visitor Visa. You can usually stay in the UK for up to 6 months with this visa.
SPIE recommends that you secure your travel visa before registering for the conference as cancellations after the preregistration cutoff date may result in a cancellation fee.
Letter of Invitation
FOR CONFERENCE CHAIRS, TECHNICAL COMMITTEE MEMBERS, AND AUTHORS: Individuals requiring letters of invitation to obtain travel visas must be listed on a paper or in the programme to receive an invitation letter. If you are listed in the conference programme and need an Official Invitation Letter from SPIE for visa application purposes, please submit the completed Invitation Letter Form.
FOR EXHIBITORS: If you are an exhibitor requiring a letter of invitation from SPIE to obtain a travel visa to participate in the Exhibition, please fill out and send the Exhibitor Invitation Letter Request Form.
How to request an invitation letter - for exhibitors
To request an invitation letter, if you are an exhibitor at an SPIE event, fill out and submit the Exhibitor Invitation Letter Request Form