If you have 24 hours to spend in Bromley, you can start your day with a visit to the Churchill Theatre, which hosts various shows and concerts throughout the year. It will take about 2-3 hours to attend a show.
You can then head over to the Bromley Glades Shopping Centre, where you can spend several hours shopping at a variety of high street stores and grabbing a bite to eat at one of the many restaurants. This could take around 3-4 hours.
Another option for the afternoon is to visit the intu Bromley Market Square, which is located right outside the shopping centre and offers more outdoor dining and shopping options. This could take around 2-3 hours.
In the evening, you can head over to the Cineworld Cinemas, which is close to the shopping centre, to catch a movie. This will take around 2-3 hours.
If you have time in the morning or afternoon, you can also visit the Bromley Museum, which showcases the history of Bromley and is located near the Churchill Theatre. This could take around 1-2 hours.
Overall, these activities will allow you to experience the best of Bromley in a day and should take around 10-15 hours.