Major Peake, who blasted into orbit on board a Soyuz rocket on Tuesday, said he was “loving every minute” of his first few days on the International Space Station (ISS).
With a nod to station commander Scott Kelly, a US astronaut who is spending a year aboard the ISS, the 43 year old revealed his first meal was a British favourite.
He tweeted: “What makes a good leader? @StationCDRKelly having a hot bacon sarnie waiting as my 1st meal on ISS. Boy that tasted good! Principia.”
And he added: “1st 48hrs on ISS – busy but incredible. Amazing how fast the body adapts to new environment. Found my tea … life is good!”
He has also received messages of support from the Queen and Sir Elton John.
— Tim Peake (@astro_timpeake) December 17, 2015
His tweets came ahead of a question and answer session today, which will form part of a busy schedule for the former Army aviator and helicopter test pilot.
According to the European Space Agency (ESA), Major Peake will unpack cargo from a spacecraft, spend an hour on the exercise bike and take part in a Canadian experiment called Marrow, investigating the effects of radiation on bone marrow.
Major Peake is due to speak to members of the press for the first time since docking with the ISS via a live link to the European Astronaut Centre near Cologne, Germany.
The ESA has confirmed the press conference with Major Peake will go ahead at 2.15pm GMT and last for 20 minutes.