Inspector Knacker of the Yard has fingered the collar of a 41 year-old man who he thinks hacked the websites of Theresa May and the Home Office.
The attacks were attributed to members of the hacktivist group Anonymous.
The Stoke man, who has not been named, allegedly carried out a DDoS attack on the sites. Coppers were seen removing computers, telephones and electronic storage devices from his house.
The man has been arrested on suspicion of assisting or encouraging crime contrary to the Serious Crime Act 2007. He was bailed until mid-December.
Detective Inspector Jason Tunn, from the Metropolitan Police's Crime Unit (PCeU), told the Independent that the arrest demonstrates the commitment of the PCeU and its colleagues to combat cyber criminality anywhere within the UK and take action against those responsible.
He warned that assisting and encouraging cyber crime is being treated seriously in the UK.
For this reason he was not going to do the "how many Anonymous hackers does it take to change a light bulb" gag at Scotland Yard's Christmas party. The answer, by the way, is 2399: one to change the light bulb, 200 to claim they changed the light bulb, 125 to say that the other 200 changed it wrong, 400 to inform the FBI who changed the light bulb, and the rest to set up the denial of service attack that will prevent the light from coming on.