791b4208_d_travel_operators___Telegraph__How_much_they_currently_cost
[Phone number prefixes] 0871/2/3 [How much they currently cost] 
Between 11p and 15p per minute for landline customers, plus call set-up fee. From a mobile phone, calls may cost between 20p and 41p per minute
Premium rate phone lines ban for retailers and travel operators - Telegraph
How much they currently cost