"TKD" wrote in message
...

A quick visit or call to TfL and you would have discovered there are
loads of places to top up in Twickenham.

Or sign up for auto top-up:

"If you already have an Oyster card, but do not have an online account,
you must set one up before you can set up Auto top-up. Go to
https://sales.oystercard.com/oyster/lul/entry.do create an account and
then click on "Record an existing card". From there, click on the "Buy Pre
Pay and Auto top-up" button and follow the on screen instructions."

Ian