Indeed.
Lambton was an odd character, as I'm sure I've said on another thread. He inherited the earldom of Durham in the 1960s when a Conservative MP, and renounced it under the Peerage Act 1963 in order to remain in the Commons. However, instead of becoming Mr Lambton as one would expect, he expected to be known as 'Lord Lambton' on the basis that this was the courtesy title he had before he succeeded and he had not renounced that. One may contrast the 14th Earl of Home, who on renouncing his title became plain Sir Alec Douglas-Home rather than resuming his earlier courtesy title of Lord Dunglass. Lambton was a junior minister under Edward Heath but resigned in the midst of scandal when he was found to be consorting with call girls and addicted to hard drugs (forget whether it was heroin or cocaine or both).
Ann