Richard Hammond and James May sparked the latest round of Top Gear rumours today when they arrived at the BBC without Jeremy Clarkson.

Two thirds of the famous trio rolled up to the corporation's London headquarters on motorbikes this morning - but are yet to reveal what they were discussing with bosses.

Both have ruled out appearing on Top Gear without Clarkson, although neither has closed the door on any of the other projects they work on for the corporation, for example May's Cars of the People is set to return for a second series later this year.

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Top Gear's James May and Richard Hammond were spotted heading into the BBC building this morning

The pair have yet to reveal what they were there to discuss, as speculation rages about the show's future

The uncertain future of one of the BBC's most popular shows has led to fans to speculate on whether Clarkson, May and Hammond may now start making their own programme for a rival channel, while the BBC investigates ways of keeping the long-running concept alive.

Clarkson, 55, was seen drinking with model Jodie Kidd yesterday, who some have suggested could become a new presenter on the show.

Hammond, 45, and May, 52, stopped for photos with fans outside the BBC building today, but did not comment on why they were at the iconic building.

However, James May last week ruled out claims that they could film the programme with a stand-in for Clarkson.

He said: 'Me and Hammond with a surrogate Jeremy is a non-starter, it just wouldn't work. That would be lame, or "awks" as young people say.

'It has to be the three of us. You can't just put a surrogate Jeremy in and expect it to carry on. It would be forced. I don't believe they would be stupid enough to try that.'

The two men arrived at the building on motorbikes and were seen chatting outside before heading in

They were happy to speak to fans and pose for pictures before the meeting - which came after they refused to film Top Gear without sacked Clarkson by their side

May has said working with 'a surrogate Jeremy is a non-starter' and Hammond vowed 'not to quit my mates'

James May added: 'It doesn't mean I won't go back - we may all go back in the future. It might just be we have a break from it. I don't know. It would be a bloody tough call to do Top Gear without Jeremy.'

Hammond also appeared to dispel any such move, tweeting: 'Not about to quit my mates.'

He told reporters at a charity bike rally last week that the future will be 'exciting' for the three men, but refused to speculate further on the future of Top Gear.

He said: 'Everybody knows what's happened. That's all been in the news. The future, nobody knows yet do they?

'And I cannot and won't speculate further than that. So don't know, let's see. It'll be exciting whatever.'

It comes the day after Clarkson was seen out with model Jodie Kidd, rumoured to be a possible new presenter of the show

Kidd has surged ahead in the betting stakes and is at even odds to replace ousted presenter Clarkson