Spain's Fernando Alonso will not race in next week's season-opening Australian GP on doctors' advice after a heavy crash in testing.
Britain's Silverstone circuit believes it can make money and attract more F1 fans by charging less.
Williams test driver Susie Wolff will take part in Friday practice sessions at this year's British and Spanish GPs.
Former F1 world champ's 15-year-old son following in his father's footsteps, named to race Formula 4 this year.
F1 boss Bernie Ecclestone has offered advance revenue payments to Sauber, Force India and Lotus.