Episode 1 of Robot Wars Revealed was originally aired on BBC Choice on 6th November 1998. It presented behind-the-scenes footage of Heat A of Robot Wars: The Second Wars, including interviews as well as video diaries of the Piece de Resistance, Caliban and Panda Monium teams preparing their robots for the main competition. This episode also featured an interview with House Roboteer Colin Tilley where he briefly detailed the then newly-introduced Sir Killalot.

Episode 2 of Robot Wars Revealed was originally aired on BBC Choice on 13th November 1998. It presented behind-the-scenes footage of Heat B of Robot Wars: The Second Wars, including video diaries of the Tantrum and Leighviathan teams preparing their robots for the main competition.

Heat C of Robot Wars: The Second Wars was the third of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat C was originally broadcast on November 20, 1998 on BBC Two. The broadcast managed to attract 5.95 million viewers, an increase of one hundred and fifty thousand viewers when compared with the previous episode. This meant it set a new Robot Wars ratings record. According to BARB, this meant it ranked third in the top thirty highest rated BBC 2 broadcasts during 16-22 November, behind only The Simpsons and Have I Got News For You.

Heat D of Robot Wars: The Second Wars was the fourth of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat D was originally broadcast on November 27, 1998 on BBC Two. The broadcast managed to attract 5.94 million viewers, a decrease of ten thousand viewers when compared with the previous episode. According to BARB, this meant it ranked third in the top thirty highest rated BBC 2 broadcasts during 23-29 November, behind only The Simpsons and Have I Got News For You.

Heat E of Robot Wars: The Second Wars was the fifth of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat E was originally broadcast on December 4, 1998 on BBC Two. The broadcast managed to attract 5.47 million viewers, a decrease of four hundred and seventy thousand viewers when compared with the previous episode. According to BARB, this meant it ranked third in the top thirty highest rated BBC 2 broadcasts during 16-22 November, behind only Have I Got News For You and The Simpsons.

Heat F of Robot Wars: The Second Wars was the sixth of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat F was originally broadcast on December 11, 1998 on BBC Two. The broadcast managed to attract 5.72 million viewers, an increase of 250,000 viewers when compared with the previous episode. According to BARB, this meant it ranked third in the top thirty highest rated BBC 2 broadcasts during 7-13 December, behind only The Simpsons and Have I Got News For You.

Heat G of Robot Wars: The Second Wars was the seventh of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat G was originally broadcast on December 18, 1998 on BBC Two. The episode managed to attract 5.59 million viewers, a decrease of 130,000 viewers when compared with the previous episode. According to BARB, this meant it ranked third in the top thirty highest rated BBC 2 broadcasts during 14-20 December, behind only an airing of Willy Wonka & the Chocolate Factory and The Simpsons. It became the first episode to have beaten Have I Got News For You in the ratings, as that show only attracted 5.27 million viewers that week.

Heat H of Robot Wars: The Second Wars was the eighth of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat H was originally broadcast on January 8, 1999 on BBC Two. The broadcast managed to attract 5.94 million viewers, an increase of 350,000 viewers when compared with the previous episode. According to BARB, this meant it ranked second in the top thirty highest rated BBC 2 broadcasts for the first time, during 4-10 January. It also became the first episode to beat The Simpsons in the ratings, finishing only behind Gimme Gimme Gimme.

Heat I of Robot Wars: The Second Wars was the ninth of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat I was originally broadcast on January 15, 1999 on BBC Two. The broadcast managed to attract 5.58 million viewers, a decrease of 360,000 viewers when compared with the previous episode. According to BARB, this meant it ranked second in the top thirty highest rated BBC 2 broadcasts during 11-17 January, behind only Gimme Gimme Gimme. A behind-the-scenes spin-off episode was also broadcast on Robot Wars Revealed on BBC Choice.

Heat J of Robot Wars: The Second Wars was the tenth of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat J was originally broadcast on January 22, 1999 on BBC Two. The broadcast managed to attract 5.66 million viewers, an increase of 80,000 viewers when compared with the previous episode. According to BARB, this meant it ranked second in the top thirty highest rated BBC 2 broadcasts during 18-24 January, behind only Gimme Gimme Gimme.

Heat K of Robot Wars: The Second Wars was the eleventh of twelve heats which determined the Semi-Finalists of Robot Wars: The Second Wars. The episode featuring Heat K was originally broadcast on February 5, 1999 on BBC Two. The broadcast made three Robot Wars ratings records; firstly, it managed to attract 6.13 million viewers, making it the first to not only top six million viewers, but also managed to beat the previous record holder, Heat C, by 180,000 viewers. According to BARB, the episode also became the first to top the thirty highest rated weekly programmes on BBC 2, during 1-7 February.

Heat L of Robot Wars: The Second Wars was the twelfth and final heat which determined the Semi-Finalists of Robot Wars: The Second Wars. This episode was originally broadcast on February 12, 1999 on BBC Two. The broadcast managed to attract 5.72 million viewers, a decrease of 460,000 viewers when compared with the previous episode. According to BARB, this meant it ranked first in the top thirty highest rated BBC 2 broadcasts during 8-14 February, for the second consecutive week.

Semi-Final 1 of Robot Wars: The Second Wars was the first of two Semi-Finals to determine which two of six heat winners would proceed to the Grand Final of Robot Wars: The Second Wars. As usual, a Gauntlet would eliminate one robot, while the Trial (Pinball) would eliminate another. The remaining robots would pair off and fight to determine which two robots moved on to the Grand Final. The episode featuring Semi-Final 1 was originally broadcast on February 19, 1999 on BBC Two. It managed to attract 6.01 million viewers, an increase of 290,000 viewers when compared with the previous episode. According to BARB, it fell to second in the top thirty highest rated BBC 2 broadcasts during 15-21 February, behind Red Dwarf.

Semi-Final 2 of Robot Wars: The Second Wars was the second of two Semi-Finals to determine which two of six heat winners would proceed to the Grand Final of Robot Wars: The Second Wars. As usual, a Gauntlet would eliminate one robot, while the Trial (Pinball) would eliminate another. The remaining robots would pair off and fight to determine which two robots moved on to the Grand Final. The episode featuring Semi-Final 2 was originally broadcast on February 26, 1999 on BBC Two. The broadcast set a new Robot Wars ratings record, attracting 6.21 million viewers, an increase of 80,000 viewers when compared with the previous record holder. According to BARB this meant it ranked second in the top thirty highest rated BBC 2 broadcasts during 22-28 February, behind only Red Dwarf.