The sudden death of Alexander Mosley, son of FIA president Max Mosley, is set to affect a row over plans to impose a budget cap on Formula One.

Following a meeting at Heathrow, the Formula One Teams' Association is demanding "urgent talks" with Mosley over his bid to push through a voluntary £40 million cap.

The teams fear Mosley's proposal will create a two-tier championship pitching those teams that accept the cap, and greater technical freedom, against those who want to spend more but who consequently face tighter technical constraints.

Mosley has set a deadline of 29 May for entries to be submitted for the 2010 season, with teams having to make clear whether they accept the cap.

However, following the loss of his son, Mosley has cancelled a visit to this weekend's Spanish Grand Prix in Barcelona where he would have been available to meet with the team principals.