What are the most annoying grammar pet hates?

THE prefix ‘pre’ is so over-used it can render the actual word redundant. In BBC news bulletins, we hear of police operations that were ‘pre-planned’. Was some work done before the plan was prepared? If not, why not just use the word planned? I have heard Chris Evans ask a guest who was taken by surprise: ‘Were you not pre-warned?’ Clearly he just meant warned. And I struggle with the idea of pre-preparing (or, indeed, pre-booked). Another pet hate is when a sales person says: ‘I have a good deal for yourself’ and ‘You can get back to myself’. Whatever happened to you and me? IAN STROMDALE, Leigh-on-Sea, Essex. COULD the BBC tell its presenters and reporters not to use the adjective ‘incredible’ for just one week? I am fed up with its lazy and usually inaccurate use. I counted six ‘incredibles’ in only two minutes on one programme. Who knows, if it is banned, a whole new set of adjectives could end up back in use. KAREN BARRIE, Whittle-le-Woods, Lancs. AITCH is the eighth letter of the alphabet, not the heighth. B. RUSHTON, Stourport-on-Severn, Worcs. THE increasing use of ‘was sat’ drives me dotty. To say ‘He was sat in the corner’ begs the question: ‘By whom?’ Seated, please. MAggIE WOODS, Ayr. WHEN I was a teacher of six-year-olds, I couldn’t stand their use of the ‘f’ sound instead of ‘th’. However, I may have overdone stressing this error. One little girl excitedly told me: ‘When I go to Thrance I’m going to eat throgs’ legs.’ Mrs B. PAUL, Knaresborough, N. Yorks. WELL done for decrying the use of a ‘k’ instead of a ‘g’ (Letters). This means the modern pronunciation is ‘anyfink’ and ‘somefink’. Know wor I mean? D. BELFIELD, High Peak, Derbys. WHY do so many TV and radio presenters pronounce absolutely as ‘ap-solutely’? IAN MATTHEWS, Hastings, E. Sussex.