"Jaime" wrote in message
news
Thanks for the reply, as pointed out by Paul that would be an expensive
option. What I prehaps meant to ask was is it possible to upgrade the zone
1-6 part of my season ticket to an oyster card for say an nominal fee (or
for free), so that I can have the benefit of the oyster card when
travelling
within zone 1-6.

You can do that. Just buy your annual travelcard from a LUL operated ticket
office!