Name and shame the awkward squad

Sir John Chilcot, pictured when his inquiry into the Iraq war was set up in 2009. Photograph: David Cheskin/PA

We are constantly being told that the Chilcot inquiry is being held up by some uncooperative witnesses (Chilcot’s main revelation? These inquiries don’t work, 14 August) but we are not told who they are. Isn’t it about time we were?
Rob Parrish
Starcross, Devon

• Is it not surprising, given the pickle that Russia is in, that dill is so prevalent (Dill with it, 10 August)?
Derek Rainsford
Monmouth

• I note your campaign for Guardian “supporter membership” for £5 a month. I trust that you will be vetting applicants for readership of rival newspapers?
Eddie Dougall
Bury St Edmunds, Suffolk