Leaving aside the period up to 1945 when many types had a very short lifetime there are a couple of fairly short-lived types in the post war years. The Swift F1 entered service in 1954 and the last F7 left in 1961. The Basset CC1 lasted a little longer in RAF service, managing nine years from 1967-1974, while the Belfast managed just 10 years in service.
No doubt there are types (as opposed to marks) with much shorter lifetimes - maybe others can find examples