This mission will start automatically after completing the mission "Say Cheese".
DedSec acquired the passwords and account numbers to several Clan Kelley laundered money accounts at the Bank of England.
Get to the bank and clean out those accounts.
Although you can do most of the work at the bank with your spiderbot or security cameras, in the end you need to be close enough to the server for the transfer process to continue. So you need to get into the bank. I used the side technical entrance. You should not have any problems with getting rid of the guard outside and in the garage.
For now, stay in the garage, and switch to the bank's security camera system. Summon spiderbot and through the ventilation duct get to the server room. Watch out for two traps inside the duct
When you interact with the server then a network bypass will appear which you must solve.
You can complete the entire puzzle by switching between security cameras,...
...and you can unlock the final nodes with the spiderbot. Before interacting with the server again, activate the traps available in the bank and eliminate as many enemies patrolling the bank as possible this way.
When you hack the server then an alarm will be raised in the bank and the guards will start looking for you.
In the garage you'll be at an acceptable distance from the server so the transfer can continue, and probably not too many guards will be looking for you here. In my case two of them came, one was killed by a trap activated in the corridor, the other one I just shot.
When the transfer is complete just run outside and after a while the mission should be over.
