The Arches. I’ll go there next. It’s a railway viaduct – ripe for tagging – on the edge of Gloucester Road. It’s on the other side of Bristol but that never stopped Billy, not if he wanted to see his friends. He’d set off on his bike and cycle the eight and a half miles it takes to get there from our house. Billy was always secretive about who he was going to see. ‘Just mates, Mum,’ he’d say. When the kids were little and went to a local primary school I knew who all their friends were. We seemed to spend half our lives going to birthday parties and playdates and ferrying the kids to and from sleepovers. But when the boys started secondary school on the other side of town their friends, scattered all over Bristol, became a mystery to me. Jake told us that Billy’s Gloucester Road friends weren’t from school at all. He said they were older guys, in their late teens and early twenties, who lived in a squat. I was horrified. I imagined drugs and squalor and crime and I told Billy I didn’t want him to have anything to do with them. He told me I was narrow-minded and brainwashed by Mark. His friends weren’t down-and-outs, they were artists who refused to become wage monkeys to line some capitalist landlord’s pocket. Why shouldn’t they live in an abandoned building? They weren’t doing any harm to anyone. I didn’t know what to do. We couldn’t keep him locked in the house all weekend. The alternative was to ferry him into town in the car if he was going to the cinema with friends and then pick him up afterwards but what was to stop him from getting a bus to Gloucester Road the second we dropped him off? Mark said we should take Billy’s bike off him for a bit, until he learned some responsibility. I suggested that Billy take me to the squat to meet his new friends but my son said he’d rather die than do that.

‘Did you introduce your parents to all your friends when you were fifteen?’ he asked me and I had to admit, to myself anyway, that I hadn’t. There were countless boyfriends who I met at night after sneaking out of the house. Lots of older brothers and sisters of my mates who’d go into the Co-op to buy us bottles of White Lightning and Thunderbird to drink in the park. One of my male friends had to go to the hospital to get his stomach pumped after we got stupidly drunk and he was someone I’d known since childhood. I didn’t end up in A&E. I’d already puked into a flower bed.