Bring Caravaggio to those of us outside the M25 | Brief letters

Cultural divide | A slice of delight | Surgery song choices | Beard prejudice | Carer’s allowanceI’m so pleased to see that the National Gallery exhibition The Last Caravaggio is free (Review, 16 April). Now all I have to do is navigate the byzantine system needed to book a train ticket, get to a mainline station, and book an overnight stay in London. If only there was a way such exhibitions could be held in more central areas of the country, cheaper and more convenient for many of u