From http://www.bbc.co.uk/news/uk-england-london-20234125

Quote:

Fares across London's transport network will go up by 4.2% from
January, mayor Boris Johnson has announced.

The rise means a single bus fare on Oyster pay-as-you-go will be
£1.40, up by 5p, while a zone 1 Tube journey will cost £2.10, an
increase of 10p.

The increase, described by the mayor as "balanced", is 1% above the
Retail Prices Index (RPI) inflation, similar to the increase seen in
train fares.

Cycle hire cost also doubled with an annual membership rising to £90.

In October, the government announced that from January the average
fares on mainline trains will rise by 4.2% rather than 6.2%.

The RPI plus 1% formula used for mainline trains is also expected to
apply for London's transport network for the next two years.

-- End quote

So Boris Bike users see a much larger increase than LU and bus users
-- is the Barclays sponsorship being cut?