"New" TfL information number

TfL's website says "Get journey information in a flash by calling our new, voice-activated telephone service on 0843 222 1234" but calling 08 numbers is more expensive from most phone lines.

Say no to 0870 is a good website for finding the geographic "connect numbers" for 08 NTS (Number Translation Service) numbers

The entry for 0843 222 1234 gives two alternatives - 020 7222 1234 - TfL's main number and 020 7222 1200 - a lesser known but still long-standing number which (it says) connects through to the same place as 7222 1234 option 2. I haven't tested this.