Pros
Good opportunity to be more political. Many bright coworkers. UK offices are the foundation of knowledge in Arup and they share their knowledge easily.
Cons
Being dishonest is a way to cover up deficiencies in management by leaders. UK offices transfer knowledge to the US offices and US offices are almost nothing compared with UK.British people have more chances to advance their career and you feel it from first day! Majority of US projects are very low key and average (if not below) projects. Be careful which office you will join as it may be a pathway to hell. Sick people are free to do anything and they face no consequences. Lots of complains on abuse, unprofessional behavior, and misconduct at work is being ignored in many offices all around US. Management and HR department can’t or don’t do anything. HR is super busy and does not have time for all responsibilities, even basic ones. Work life balance is a joke in many groups since they underbid many projects. Very long hours and sometimes no overtime. Pushing and abusing people to work long hours without recognition. Salary is low obviously. It does not a great job security. In many cases there is no career path.