Upvote:2
Unless you're somehow distinctive, or have interesting information in the UKVI computer, the answer is "no." You'll pass through UK Immigration in the Gare du Nord, Paris, before you're allowed to board the train.
Upvote:8
The fingerprinting by UK Immigration on arrival is called "Secure ID". It is used for people travelling on UK Visas or UK Biometric Residence Permits who will have provided their biometrics (fingerprints) when applying for their Visa or Entry Clearance. The machine compares the person's prints to those on file. Only two digits are compared, usually thumb and index finger.If the prints don't match the Officer will ask you to wait while they check your Visa/Entry Clearance application (on-line) to perhaps ask you some verification questions (eg purpose, dates etc). People who do not require Visas visiting the UK as 'Visitors' do not use 'Secure ID' as UK Immigration has not got your fingerprints on file. There is another circumstance too. If you are required to undergo further questioning and are placed in a secure holding room then all your fingerprints will be captured on a separate system along with a photo.