Hi

Looking for some help here, my partner has just had a change of job (And
location). She currently has a Zone 1 - 4 Annual Oyster expiring in July,
living equidistant from Totteridge & Whetstone LU and Oakleigh Park BR.
Her new job is located 2 mins from East Croydon station (Zone 5)

Ticketing wise I suggeseted getting a monthly Oyster extension for just Zone
5 until her annual runs out, however our local ticketing office said she
would have to buy a Zone 5 & 6 period travelcard. Looking through the TFL
fares guide, that appears to be correct, is there no way of adding One zone
to an existing ticket ?

Route wise, my suggestion is Oakleigh Park to KX, walk to KX Thameslink, and
then FCC to East Croydon.
OR
Northern Line to London Bridge, then FCC or Southern to East Croydon.

Has anyone any experience of this route, interchanges and the likelyhood of
gaining a seat in the peaks ?

Regards

Sam