Short answers, pulled from the story.
Peter Blake designed the Sgt. Pepper's Lonely Hearts Club Band sleeve in 1967, working alongside his then-wife Jann Haworth. The pair received a Grammy Award for Best Album Cover, Graphic Arts for the work, though Blake has spoken repeatedly about his dissatisfaction with the one-off fee of two hundred pounds and the absence of any royalties.
Blake received a one-off fee of two hundred pounds for designing the Sgt. Pepper sleeve, with no subsequent royalties attached to the deal. He has complained about this arrangement many times since.
Peter Blake was appointed Knight Bachelor in the 2002 Birthday Honours for his services to art. He was knighted by Prince Charles in an investiture ceremony at Buckingham Palace.
On the Balcony is a painting Blake made between 1955 and 1957. Despite appearing to be a collage, it is entirely painted, and it shows a boy holding Edouard Manet's The Balcony alongside badges and magazines. It was inspired by a Honore Sharrer painting called Workers and Paintings.
Blake designed sleeves for The Who's Face Dances in 1981 and The Who's WHO in 2019, the Band Aid single "Do They Know It's Christmas?" in 1984, Paul Weller's Stanley Road in 1995, the Oasis compilation Stop the Clocks in 2006, and Eric Clapton's 24 Nights artwork in 1990-1991, among others.
The Brotherhood of Ruralists was a group Blake co-founded in 1975, during a period when he had left London to live near Bath and was focusing on English folklore and literary subjects rather than pop culture. Blake was one of its founding members.