Dave wrote:
On Saturday I traveled from Wood Green to Notting Hill and then later
returned from Ladbroke Grove to Wood Green.

I was charged £1.50 each way. Can I ask if this is correct seeing as I
have a zone 2-3 tavelcard?

Perfectly correct, as there is no obvious way of travelling between the
stations in question without passing through Zone 1, and £1.50 is the
Oyster Single fare for a journey in Zone 1.

Had you travelled by bus all the way (or at least from somewhere in Zone
2), and not used the Tube in Zone 1, then you wouldn't have been charged
any extra.

HTH,

Barry