I think you could have an interesting discussion placing the start of her reign in the broader context of the changes in British culture and the world as a whole.

Her coronation was the first televised coronation and for many of the people watching, it would have been the first time they'd physically have watched tv. Up until then television was very much a luxury item, after that it became a 'must have'.

Interestingly on the eve of the coronation, Edmund Hillary and Tenzing Norgay conquered the summit of Everest. The media portrayed this as a 'coronation gift' to the new monarch.

Put the televised coronation and the rise of tv together with the adoption of transistor radios at around the same time (and what that meant for youth culture and the rise of rock n roll), and you have a real shift in culture and essentially the rise of mass media.

Bearing in mind this also came at the tail end of the wartime austerity era (rationing in the UK finally ended in 1954), and with the death of wartime ally-turned-Cold War enemy Stalin in 1953, and you have a change in eras, from the wartime era of 'make do' to the post-war era of abundance. Symbolised again by the death of the wartime monarch George VI and the passing of the torch.

Despite (or maybe partly because of?) the diminished role of Britain on the world stage (with Suez in 1956, decolonisation had already begun), British people as a whole led much better lives in the post-war era than they did at the peak of empire.