Not in a million years a good London business will move to Bucharest.
Why not ?
Because reaching Bucharest from any other place of Europe (and viceversa) takes at least 20 hours by car, 16 by train and 24 by truck. Not talking about air travel because there is only 1 airport, small one with bad services and no good transportation to/from town.
Romania has no roads for access.
Romania has only internet access. That’s all.
In about 70–80 years Bucharest will reach London’s prestige, but then London will be moved to Mars or any other terraformed planet.