Its centre is declining because the population is mobile and can choose where to spend their money. On the whole they are not choosing Bracknell. Bracknell was not designed to attract people into town, it was taken for granted that they would come. It was designed to deal with the practicalities of vehicle access and the result is a practical but unattractive centre. The role of town centres has changed since the 60's and Bracknell has failed to respond to these changes.
Town centres can no longer rely on being the sole choice for shoppers.
The time and money that people devote to leisure has increased enormously. Successful town centres have attracted this spending to compensate for the loss of retaining. Early retirement and youth unemployment means that there are more people with time on their hands and limited budgets who are attracted to town centres because of its public transport. This is an opportunity but town centres may risk developing a down market image. The government's household projections create intense pressure for greenfield development in counties like Berkshire.