Conversation so far:
When did Zola Budd arrive to Britain?
1984
Are there any other interesting aspects about the Zola Budd article besides arriva date in Britain?
The Daily Mail persuaded Budd's father to encourage her to apply for British citizenship to circumvent the international boycott of South Africa, so she can compete in the 1984 Olympics
Did Zola Budd apply for British citizenship?
British citizenship was granted in short order and she moved to Guildford. Her application and arrival was controversial due to her acquiring a passport under preferential circumstances.
What did Zola Budd do once she became a British citizen?
Shortly afterwards, Budd was forced to pull out of a 1500 metres race in Crawley, Sussex, when the town council withdrew their invitation at short notice.

Question: why?
Self-contained rewrite: Why did town council withdrew their invitation for Zola Budd to compete at a 1500 meter race in Crawley, Sussex?