The Rehabilitation of Offenders Act was brought in back in 1974 to ensure that people who had a conviction that was spent would not have to declare it unless they were working in a particular field - that is where the DBS service comes into play.
They can provide Basic, Standard and Enhanced for anyone working say with children, finance or certain other employments.
What the RoO Act cannot and does not prevent is where a prospective employer can Google/Bing an individual and therefore finds out about a conviction that is spent but is online in a local rag and then makes a decision not to employ them - in those circumstances, the RoO Act is worthless and we are not allowing people the opportunity to get on with their lives - the internet search engine effect is preventing rehabilitation and therefore goes against everything that the RoO Act was designed to introduce.
This is not preventing the newspaper from reporting the story initially and the RoO Act allows for the most serious of crimes never to be spent but with the Right to Be Forgotten - especially in the context of the GDPR and the new Data Protection Bill 2018 - if an individual who has a conviction that is spent, requests that the news story is either anonymised, or deleted and that the search engines also reflect that in the indexing.
Surely, that protects freedom of speech (the story still exists in the local hard copy paper) and also ensures that those members of society who want to get on with their lives, can do so and are adequately protected from the negativity that search engines can inflict. Society is also aware about those criminals with serious convictions - they are never spent.
Just on a separate point - I am aware that the Lords and Commons are trying to strengthen the Rehabilitation of Offenders Act 1974 by allowing individuals the ability to remove the search engine links to them where appropriate.