CNS wrote:

16:31 Waterloo (Jubilee Line Entrance) Exit £2.80 £2.91
16:14 Baker Street Entry £4.00 £0.11
16:14 Baker Street Top-up £2.00 £4.11
16:00 Bus 274 Entry £0.90 £2.11
13:26 Regents Park Exit £2.00 £3.01
13:01 Arsenal Entry £4.00 £1.01
12:59 Arsenal Top-up £2.00 £5.01
10:12 Arsenal Exit £2.00 £3.01
09:54 Holborn Entry £2.50 £1.01
09:19 Holborn Exit £2.50 £3.51
08:50 Waterloo (Bkloo, Nthn, W&C Lines) Entry £4.00 £1.01
08:50 Waterloo (Bkloo, Nthn, W&C Lines) Top-up £5.00 £5.01

Why was it when I entered Holbourn at 9:54 it took £2.50, not £4?
Does this mean I have to have a minimum balance on the Oyster of £4
before starting a journey.

What seems to have happened here is that you were regarded as
re-starting the journey which you first started at Waterloo. The system
took back the £2.50 that it had refunded you on leaving Holborn 35
minutes earlier and then on leaving Arsenal you were refunded £2,
meaning that you had paid £2 for a Waterloo to Arsenal journey.


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Bob