UK Border Force officials have been known to place extra scrutiny on and to spend longer processing national identity cards issued by certain member states which are deemed to have limited security features and hence more susceptible to tampering/forgery.
According to statistics published by Frontex, in 2015 the top 6 EU member states whose national identity cards were falsified and detected at external border crossing points of the Schengen Area were Italy, Spain, Belgium, Greece, France and Romania [REF].