If a script quotes a specific ticket price, it also needs to quote the specific booking fee, where applicable, e.g. ‘tickets at £25 plus £2 booking fee’. This policy ensures that listeners are given an all-inclusive price and are not misled.
If a fee is charged for payments made with a credit card, but not for payments made with a debit card, prices should be quoted as “from £x” and the ad should include a disclaimer such as “booking fee may apply”.
A CAP news story on ticket pricing can be found here.