The launch of the Building Centre's 75th-anniversary celebrations and exhibition on Thursday also went with a bang - rather too literally.
Just before Norman Foster stepped up to the podium to give the keynote speech at the opening, a loud noise made the assembled company jump.
Fortunately it was merely the battery blowing in the microphone and normal service was quickly restored to allow Foster to say how impressed he was by the exhibition. And every cloud has a silver lining.
The Building Centre Trust received permission the next day to invest in a more up-to-date microphone.