I shook my head. The Glevum road was thronged with refugees and if I had been the Saxon commander I would have wanted nothing more than to pursue an outnumbered enemy along that road. We could not outmarch him, for we would be obstructed by refugees, and he would find it a simple matter to cut through those panicked people to bring us death. It was possible, even likely, that the Saxons would not make any pursuit at all, but would be tempted to plunder the city instead, but it was a risk I dared not take. I gazed up the long hill and saw yet more of the enemy coming to the sun-bright crest. It was impossible to count them, but it was no small warband. My own men were making a shield wall, but I knew I could not fight here. The Saxons had more men and they had the high ground. To fight here was to die.

I twisted in the saddle. A half-mile away, just to the north of the Fosse Way, was one of the old people’s fortresses, and its ancient earth wall – much eroded now – stood at the crest of a steep hill. I pointed to the grass ramparts. ‘We’ll go there,’ I said.

‘There, Lord?’ Issa was puzzled.

‘If we try to escape them,’ I explained, ‘they’ll follow us. Our children can’t move fast and eventually the bastards will catch us. We’ll be forced to make a shield wall, put our families in the centre, and the last of us to die will hear the first of our women screaming. Better to go to a place where they’ll hesitate to attack. Eventually they’ll have to make a choice. Either they leave us alone and go north, in which case we follow, or else they fight, and if we’re on a hilltop we stand a chance of winning. A better chance,’ I added, ‘because Culhwch will come this way. In a day or two we might even outnumber them.’

‘So we abandon Arthur?’ Issa asked, shocked at the thought.

‘We keep a Saxon warband away from Corinium,’ I said. But I was not happy with my choice, for Issa was right. I was abandoning Arthur, but I dared not risk the lives of Ceinwyn and my daughters. The whole careful campaign that Arthur had plotted was destroyed. Culhwch was cut off somewhere to the south, I was trapped at Aquae Sulis, while Cuneglas and Oengus mac Airem were still many miles away.

I rode back to find my armour and weapons. I had no time to don the body armour, but I pulled on the wolf-plumed helmet, found my heaviest spear and took up my shield. I gave the mare back to Guinevere and told her to take the families up the hill, then ordered the men of the levy and my younger spearmen to turn the seven food wagons round and get them up to the fortress. ‘I don’t care how you do it,’ I said to them, ‘but I want that food kept from the enemy. Haul the wagons up yourself if you have to!’ I might have abandoned Argante’s wagons, but in war a wagon-load of food is far more precious than gold and I was determined to keep those supplies from the enemy. If necessary, I would burn the wagons and their contents, but for the moment I would try to save the food.