Richard Hammond has cast the future of 'Top Gear' into more doubt after saying he's not going to "quit his mates".

Richard Hammond

Richard Hammond

The petrol head has taken to Twitter to make a cryptic post about his future on the programme following the firing of his friend Jeremy Clarkson from the BBC motoring series.

In the wake of the news executive producer Andy Wilman has resigned, Hammond told his followers there's "nothing" for him to quit.

His tweet read: "To be clear amidst all this talk of us 'quitting' or not: there's nothing for me to 'quit'. Not about to quit my mates anyway (sic)."

Yesterday (23.04.15), the trio of 'Top Gear' stars Hammond, Clarkson and James May and Wilman all met up sparking speculation they are planning their own rival show on a different TV channel.

May also insisted he and Hammond would not be able to continue on 'Top Gear' without Clarkson - whose contract was not renewed after he got involved in a fracas at a hotel with producer Oisin Tymon.

May said: "Me and Hammond with a surrogate Jeremy is a non-starter, it just wouldn't work ... it has to be the three of us. I don't think you could carry on with two people and put someone in as the new Jeremy because they are not going to be the new Jeremy. That would be short sighted and I don't think it would work. Virtually impossible."