A few details
London (UK) has two police forces. The Metropolitan Police (The Met) that is responsible for most of London and the City of London Police (CoLP) which is an older and separate force that is responsible for the ancient 'square mile' centre of London. I'm wondering which police force it is.
The CoLP have close contacts with wealthy and infuential organisations that have headquarters and offices in the centre of London and have specialist fraud and economic crime units that work closely with major organisations.
If it is the CoLP, I'm sure they would not be influenced by any large dinners or invitations to international conferences from entertainment industry executives. Throughout their history, the CoLP have never been associated with corruption or dubious practices. The Met have a similar history of absolute probity, as everybody knows.