Dr Critchlow rightly suggests that those who want to be called doctor should take a PhD or LLD.

When I was in Iran on business in 2010 giving two-day courses in Isfahan and on Kish Island I was perturbed to see that the certificates of attendance issued described me as ‘Dr Singleton’ (I have a humble LLB). I protested. I was told that the University of Isfahan had decided that, as I had written 30 law books, I was the equivalent of a doctor of laws. Would it were so easy.

However, more generally, I believe that once you have the basic legal knowledge it is experience and learning on the job that counts as much. I am very pleased we do not force young people to study until they are 30, as happens in some continental jurisdictions, when they could be out practising.

I graduated at 20 in law so was only 23 when I qualified and had seven years’ PQE at 30. It stood me in good stead.

Susan Singleton, Singletons, Pinner