The Big Bang is a CITV science show broadcast from 15 April 1996 – 8 September 2004 and produced by Yorkshire Television.
Both Gareth and Violet left the show after the sixth series as they were, as said by ITV at the time, "concentrating on running their own company [WhizzBang] and looking after baby Indigo".
[1] However, Gareth Jones later revealed on his website that they left because "when we were asked to do the 2002 series it looked like many of the people who usually make the programme with us wouldn't be doing it any more.
There were lots of changes planned for the Big Bang which Violet & I didn't agree with, so we said thank you for the last 6 series and wished them all the luck for the future.
The set stayed remained mainly unchanged, however the neon The Big Bang sign in the kitchen was not replaced with the new logo until series 8.