There is a minimum contribution of 3% of your basic pay, but you can choose to contribute any amount above that, although only amounts up to 5% of your basic pay will attract an employer contribution. See Contributions for more information.
Yes. TSB will make employer contributions to your pension pot. The amount TSB contributes will depend on what you pay in each month, with a maximum employer contribution being 13%. See Contributions for more information.
This depends on the policy in force at the time. You can find details in the HR Essentials Policies Section on TSB Intranet.