I've just been reading about the service changes when the NLL shuts
down between Gospel Oak - Stratford from 20th Feb:

http://www.tfl.gov.uk/corporate/proj...ces/13915.aspx

Under the paragraph entitled "Ticketing" it states that,

" Oyster pay as you go users may incur an additional charge for using
Tube services.

As a result you may be entitled to a refund, which would be
automatically credited to your Oyster card. "

What would be the journey criterion required for a passenger to
qualify for a reimbursement ?
Could someone give an example of a journey where a refund, because of
otherwise unnecessary use of the tube, would be applicable ?

regards
uc