Do the ages and timelines of the characters in this book add up?
In the first chapter, Pip seems about eight years old. Then, according to the book, he first visits Miss Havisham a year later. Here he meets Estella, who Pip thinks is about his own age, although she seems older. The way she talks about the brewery and what 'satis' means makes her sound older than nine. Pip seems somewhat older too. For example, he uses the word melancholy instead of sad. I would say they were both at least eleven. In most films and TV series, the young Estella looks about thirteen. Reading the book I imagined her being prepubescent, although Pip does say that one of the reasons she appeared older was that she was a girl. I am sure the book says he only visited the house for about ten months before he was apprenticed to Joe. Apprenticeships usually started at about age fourteen, so some more years seem to have disappeared from Pip's childhood. Pip learns of his Great Expectations four years later, when he would be eighteen. This just about gives Magwitch time to be transported to Australia, serve his seven years forced labour and to start making lots of money.
I also wondered about the ages of the older characters. Magwitch was described as about sixty when he comes back to see Pip, and he is still quite an active man. That makes him about forty-five when he first terrorises Pip in the graveyard, which is plausible. He would have been thirty-seven when he fathered Estella with Molly, which is plausible too.
I am pretty sure he said Compeyson was described as being a younger man than Magwitch. Compeyson was supposed to marry Miss Havisham, so presumably they are about the same age. If anything, Miss Havisham would probably be a bit younger. If Compeyson is five years younger than Magwitch, and Miss Havisham is one year younger than Compeyson, that makes her fifty-four when things come to a head, and only thirty-nine when she first meets Pip. That seems far too young. When Pip first meets her, she already seems like an old crone; she leans on his shoulder to exercise around her dining room. However, she does not seem to have aged any fifteen years later. In addition, Herbert tells Pip that Compeyson jilted Miss Havisham twenty-five years before they were born, which would make that forty-three years previously. If Miss Havisham was twenty when she was jilted, that would make her between fifty-three and fifty-six when she first met Pip, and sixty-eight when she died.
Jaggers usually appears quite old in the TV and film adaptions, but his defence of Molly was the case that made his name as a lawyer. Say he was twenty-five at the time. That would make him forty when he meets Pip in the Jolly Bargemen and forty-five when everything goes badly wrong.