Alright Jack

Alright Jack is a UK slang term used to indicate that a person, or company, has no need to make changes to their existing behaviour - even if these changes would be beneficial to someone else, or would have a chance (although not a certainty) of being beneficial to the person or company concerned. It carries a slightly pejorative tone and is relatively rarely used to describe the speaker.

For example, a person might be heard to complain that "I had a great idea, that could have made them lots of money, but they refused to buy it because they're alright jack" - with the implication that the buyer was happy in their current state, and therefore had no need to take a risk, even though the speaker believes it could have provided them with a benefit; and that the speaker resents them for this.

It was used in the title of the film "I'm All Right Jack".