United Kingdom have a visa paste in the passport page which is no time limit. This type of visa has a creamy orange color with a typical pattern green frame.
In the upper left column there is a passport number visa's owner, in hand writing. While at the top right column, there is a serial number of the visa. While on the bottom center, there is the date of visa issuance.
For a description of the visa validity period is very clearly written "Given leave to remain in the United Kingdom for an indefinite period". The signature was made by "On behalf of the Secretary of State Home Office". For foreign nationals who normally require a visa to enter the United Kingdom, can use this paste visa as entry permit indefinitely.