The Independent Television Commission formally replaced the IBA on 1 January 1991 in regulatory terms; however, the authority itself was not officially dissolved until 2003.

On 19 January 1972, the British government announced the lifting of all restrictions and limits on the number of broadcasting hours per day that both the BBC and ITV could air.

The IBA ensured that along with the new daytime schedules which launched on Monday 16 October 1972 that their public service remit programming would continue after the restrictions were lifted.

[3] There were also limits on the value of prizes that could be given away – this dated from the broadcast of the UK version of Twenty-One in 1958 in which a contestant won enough money to buy both a car and a house.

[4] In 1960, two years after the quiz show scandals in America, the Independent Television Authority (predecessor of the IBA) imposed a £1,000 cap on the value of prizes which increased to £1,250 during the late 1970s with an occasional limit of £2,000 which rose to £2,500 by 1981.

British versions of popular American quiz shows had to be adjusted – The $64,000 Question having a maximum prize initially of 64,000 sixpences (£1,600) in the late 1950s, and in the early 1990s of just £6,400.

E&D's engineers also designed and built some of the first digital audio equipment for satellite broadcasting including systems using data packets.

The IBA was disbanded as part of the Broadcasting Act 1990, being replaced on New Year's Day 1991 by the Independent Television Commission (ITC) (which also absorbed the Cable Authority), and the Radio Authority (RAu), which have since been merged with other regulators such as the Broadcasting Standards Commission (BSC) and Oftel (Office of Telecommunications) to form one regulator, Ofcom.

Such was the sense of purpose and camaraderie amongst former employees of the IBA that they still meet up near Winchester for an annual reunion in late January, typically boasting an attendance of over fifty.

The first volume was published in September 1972 when the Engineering Division was located in Brompton Road, London prior to its move to Crawley Court near Winchester in 1973.

One reason for the termination of the publications was the abolition of the IBA in 1990 and the subsequent privatisation of the Engineering activities as National Transcommunications Limited [NTL]; the government white paper proposing this was published in the autumn of 1988.

IBA staff members were active not only in designing, building and operating transmitter networks they also made significant contributions to new digital broadcasting standards and their implementation.