Ronnie O'Sullivan received an OBE from the Prince of Wales at Buckingham Palace on Friday.
The 40-year-old five-time world champion, who is also known as The Rocket, was recognised for his services to snooker since turning professional in 1992.
O'Sullivan said it was "surreal" to be at the Palace and one of the best moments of his career.
Despite his nerves, O'Sullivan said Charles made him feel so at ease that at first he forgot to address him as "Sir".
He said: "Winning world titles is great - and don't get me wrong, they are special moments - but I didn't expect to feel how I feel."
The Conservatives' election strategist, Lynton Crosby, also attended the ceremony.
Crosby, originally from Australia, received a knighthood for his political service. His communications firm CTF Comms has been running the London mayoral campaign for Tory candidate Zac Goldsmith.
Goldsmith's campaign has come under fire from Labour and even from within the Tory Party for its negative campaigning and focus on opponent Sadiq Khan's Muslim heritage.
Sir Lynton refused to comment on whether Goldsmith's campaign had been too negative.
Instead he said in a written statement: "I am truly honoured to receive this award in recognition of my service to politics in the UK and especially proud that my family can rightly share in and enjoy the recognition.
"It is also recognition for the thousands of candidates, campaign staff, activists, volunteers and my company's professional colleagues who I've had the great fortune to work alongside in the UK - across elections over the past decade.
"It is their hard work and commitment in fighting for a cause they believe in and unfailing faith in focusing on the people that matter - the voting public - that have contributed to the achievement of politics and campaign successes."
Actress Sian Phillips was made a dame in recognition of a body of work across stage, television and the silver screen that has spanned six decades.
The Welsh star was married to Peter O'Toole and has performed in everything from Ibsen to The Archers and an adaptation of John le Carre's Tinker, Tailor, Soldier, Spy, opposite Sir Alec Guinness.
Now 82, her appetite for work appears little diminished and she is currently performing at the National Theatre in Lorraine Hansberry's play Les Blancs.
Speaking after receiving her honour, Dame Sian said nerves had woken her at 5.30am but that it had been a "terribly enjoyable" day.
She said: "I did think I would be working when I was really quite old but I don't think I ever thought I would be here in Buckingham Palace."