Can I buy an iPhone with cash at Apple Stores in London?

Every store has unique circumstances and policies.

Check with the store manager in advance; Even if they do accept cash …

… they might have special procedures to safely manage especially large cash transactions.

Nobody likes “surprises” … the best surprise is NO surprise.

Why are you asking? Go to or call one of the stores and ask them if they accept cash. We here are all just fellow users like yourself. No one here works for Apple.