A lovely, but slightly strange book. Higgins writes of her journies around Britain, in a rather asthmatic VW camper van, in search of the traces of Roman Britain. She writes of the places she visits with a journalist’s gift for telling detail and a botanist’s delight in plants, and sprinkles the text with fascinating anecdotes about the antiquaries of the 17th, 18th and 19th centuries who first went looking for Roman remains in Britain, as well as the archaeologists who followed them in the 20th century. But, at the end of the book, Higgins remains as elusive as, well, Roman Britain itself. I’ve got very little idea about her, of what she’s like – this may be intentional of course – and the four centuries of Roman rule also seem to dissolve away under close inspection. They’re obviously not so inaccessible as the centuries that precede or follow them, but where the rest of Empire is illuminated by contemporary writings, Britain seems oddly silent, as if still existing in the mists of Oceanus. The letters discovered at Vindolanda go some way to rectifying that, but they are fragments, frustrating; imagine trying to recreate 21st-century society from a random collection of tweets for a flavour. A fine book, nevertheless, that suggests its subject as well as exploring it.