Vantaggi
You can play the "BT game" to keep yourself appearing good without actually doing much. Play the game the way senior management want you to play it can keep you in a job for ever.
Svantaggi
It's openly discussed that the strategy is to reduce headcount by 10% per year. This results in middle management only interested in passing responsibilities to other teams and cutting their own headcount. This maybe efficient when looking at your own team but taking a step back and looking at the bigger picture means you are passing expertise out to non experts actually causing inefficiency. Unfortunately, the middle managers that reduce their own headcount like this are the ones that are promoted. It also promotes a culture of fear, bullying and teams that are only interested in protecting themselves. Performance management has been implemented and is totally flawed. It is being used as a tool to find excuses to manage people out of the business. However, the teams themselves have learned how to fight back against HR and senior management so now spend all their days collecting stats and metrics that ensure they are protecting themselves from being managed out. Bullying is rife amongst senior and middle management. EIther the middle and lower management tow the line and manage people out of the business or face the chop themselves. Promotion or career pathways are non existent unless you are prepared to sell your soul. The company is currently cancerous, toxic and a horrible place to work. Best to avoid at all costs.