One of my friend should come to visit me in Geneva, Switzerland from London via Amsterdam.
After buying his flying ticket he told me that he need a basic travelling allowance. Is that true ?

Nope NOT a requirement for European travel.

Is there a need for BTA from Nigeria to the UK, the person
That is travelling with his son to the Uk has been told that
He needs £1500 travelling allowance to leave Nigeria to the
UK he is not Nigerian he is SA working in Nigeria please
Could you help and give advice

Many thank