That was me. The point I was making is that a letter from a solicitor has no more legal weight than a letter from anyone else. A court can order you not to publish something. Carter Ruck cannot.
In this case, we are dealing with a letter to a publication. It was up to the publication's lawyers to decide whether they had the evidence to stand up their story in court if necessary. That is always a consideration regardless of whether Carter Ruck have sent a letter.
Given that TES Global, the publishers of TES, made a profit of £64M last year and have net assets of over £450M, I would not expect them to be intimidated by a letter from Carter Ruck. I don't know if their lawyers were overly cautious, but they clearly felt the journalist didn't have enough evidence to back up the story.
A smaller organisation may, of course, be intimidated by a letter from Carter Ruck, but it still has no legal weight. However, a smaller organisation may well decide it cannot face the prospect of a libel suit if one is threatened even if they do have enough evidence to back up the story. But if they are confident in their evidence and prepared to defend themselves, they can go ahead and publish. That is the approach generally taken by Private Eye, who don't have anything like the resources of TES.