A lot of the humour in the show was in the delivery and timing. Without the stage performance, most of these jokes are fairly bland.
Also, a lot of the jokes have dated - there were quite a lot I didn't understand because they made reference to people in the news in the UK at the time. Also some are a bit on the nose.
I just re-read this for the first time in decades. Took about ten minutes because many pages contain one short paragraph. Some personalities are mentioned such as politicians, the odd Royal or actor. Repeated digs are made at institutions and the British Leyland car factory. The theme of the book is suggested jokes and some of them made it to screen - I recognised one about football teams - but many did not. Easy to see why, as they continually jeer at and stereotype women, people who are gay, people from nations such as Scotland and Ireland, people from other countries, and bodily functions. In later years, the duo took to dressing as yokels (countrymen in smocks for those who don't know) and conversing to make quips. They explained that nobody had ever written to the BBC and said "I'm a yokel and I was offended by..." The Ronnies always said that the humour of the show was implied and you could hear nothing offensive if that was what you wanted. Seems like many of these jokes would not qualify. There are small cartoons, some of which leave nothing to the imagination. The show used to be moderately funny, especially the sketches. I read a paperback. This is an unbiased review.