Tube and bus fares in London will rise by 1% on average next year, while children under 11 years old will be able to travel on National Rail services in the capital for free.

Mayor of London Boris Johnson has this week revealed that all Transport for London (TfL) services will increase by 1% on average from Saturday 2 January 2016.

This is because the change in prices is pegged to the previous July's Retail Prices Index (RPI) rate of inflation, which this year stood at 1% – lower than last year's average rise of 2.5%.

However, as this is an average overall increase, the price of some journeys may increase by more, while others may remain the same. For example, the price of a cash single on the tram will rise by 4% from £2.50 to £2.60. See our Cheap Train Tickets guide to cut the cost of rail fares.

In addition, Johnson announced that Stratford and a number of adjacent stations, including West Ham, Canning Town and Stratford International (DLR), will move from zone 3 to the zone 2/3 boundary. TfL says this means people travelling to Stratford from central London will not need to pay for a more expensive zone 3 ticket.

Children under 11 with a 'Zip' photocard, who are accompanied by an adult, will also be able to travel for free on all the capital's National Rail services. They can already do this on TfL's buses and trams, and on the Tube, DLR and London Overground.

If they don't travel with an adult or don't have a 'Zip' card, they'll continue to pay 85p per journey in peak times, and 35p per journey off-peak.

The key price changes

Here are the key price changes coming into force from 2 January 2016:

  • Adult bus and tram fares: The pay-as-you-go (PAYG) single bus and tram fare is frozen at £1.50, although the daily cap increases by 10p (2.2%) from £4.40 to £4.50. The one-day bus and tram pass is also frozen at £5, while the seven-day pass increases by 0.9% from £21 to £21.20. A tram cash single will also rise by 4% from £2.50 to £2.60.
  • Adult PAYG Tube, London Overground, DLR and TfL Rail prices: PAYG single fares in zones 1-6 are frozen, with the exception of zone 1 anytime and zone 1-2 off-peak fares, which will both increase from £2.30 to £2.40.

  • Adult all-day caps on all TfL services: These will all increase by 10p.

  • Adult day travel cards on all TfL services: All-day zones 1-4, and off-peak zones 1-6 will increase from £12 to £12.10, while all-day zones 1-6 will increase from £17 to £17.20.

  • Seven-day travel cards on all TfL services: These will all increase by between 30p and 50p (0.8% and 1%).