"revulsion and guilt must have shivered across him when we called out to him in that stolen name"

After Rod's sudden disappearance, I began to thread together the disparate moments that had raised some suspicions. In 2001 we begun small meetings in my flat to discuss the logistics of blocking the Elephant and Castle roundabout to clog up a main artery into the City. Rod was a regular visitor, and even stayed the night there on occasion, most notably the night before the May Day 2001 protests. His reason for doing this was that he lived up in Hertfordshire and wanted to be in central London for the first actions of the day. Around this time, my flat was raided by the police – this seemed disproportionate when what we were actually arrested for was flyposting. We were held overnight in police cells, where even the duty sergeant expressed surprise that someone being held for "graffiti" would have their home raided.

When I was released from the police station at 5 am and made my way back to the flat, it looked as if it had been burgled. They had ransacked everything. Getting a "visit" from the police is a violation – they had trampled through my bedroom turning everything over, ransacking cupboards, drawers and wardrobes. After they had gone I started to wonder if the phones were tapped.

Read More | "How I met 'Rod', the suspected undercover police officer" | Laura Oldfield Ford | ?The Guardian | More info on "Rod Richardson"