Their detailed description of Salisbury's medieval cathedral and tall spire were part of the latest in a series of zigs, zags and twists from Russian Federation since Britain last week pointed the finger at the pair in the poisoning of ex-spy Sergei Skripal and his daughter, Yulia.
Russian President Vladimir Putin, however, on Wednesday denied the men worked for the military.
"Our friends had been suggesting for a long time that we visit this wonderful town", said Mr Petrov, looking as if he might pass out from nerves.
"Salisbury?" their interviewer asked. "It's famous for its 123 meter spire, it's famous for its clock, one of the first ever created in the world that's still working".
Ms Simonyan said: "They told me that if they found those pictures, they would send them to me on WhatsApp".
Britain alleges the nerve agent used to poison the Skripals was carried in a perfume vial, which Boshirov dismissed by saying "Don't you think it's kind of stupid for two straight men to carry perfume for ladies?"
And British journalists have been mocking the story on Twitter, highlighting the improbability of the pair's itinerary and route if they were truly tourists.
Last week, British police identified Russian nationals Alexander Petrov and Ruslan Boshirov as the two prime suspects in the March poisoning of former Russian spy Sergei Skripal and his daughter Yulia. They denied involvement in the attack.
The two men told RT their lives had been "turned upside down" by the allegations. When asked about recent trips to Switzerland they said that they were just looking for new innovations. They added that they would like to receive an apology from British officials. He was left critically ill after being exposed to Novichok in Salisbury. Two other people were affected and a woman, Dawn Sturgess, died in July after spraying herself with nerve agent after discovering the discarded bottle.
"We came there on March 2, then went to a railway station to see the timetable", Petrov said, according to RT's translation of the interview.
The channel posted a 25-minute clip of the video in Russian on its website and said it plans to air more from the interview later.
Moscow has refused to extradite the two men Britain suspects of killing Litvinenko, and one of them, Andrei Lugovoi, went on to become a Russian lawmaker. She said they were the "real" Petrov and Boshirov as far as she was able to check.
Both men match the appearance of the security camera footage released by British police in detailing their case against the men, although their hair color now appears lighter. Relations between London and the Kremlin, already frosty, plunged into crisis after the attack.
Tests on the east London hotel room where the suspects had stayed showed contamination of Novichok.
They travelled to and from Salisbury on the weekend in March that Skripal and his daughter Yulia were poisoned. So they returned to London after an hour.
"We assess that this trip was for reconnaissance of the Salisbury area and do not believe that there was any risk to the public from their movements on this day".
The took the same journey again Sunday.