David Cameron plays rugby with schoolchildren during a visit to Millwall, east London. Photo: Press Association.

When questions are being asked about your leadership, one thing you can't afford to do is drop the ball. Thankfully for the Prime Minister, he didn't, as he showed off his rugby skills in East London. It was all part of his 'aspiration nation' theme, as he unveiled funding for sport in primary schools.

But the pressure is on. And at the Tory Spring conference in Central London, David Cameron admitted his party was in battle. But he told the Conservative faithful that the Tories have never been more up to the task of turning round the country.

He evoked both Churchill and Thatcher on stage. But off stage some described his speech to me as "forgettable" and "flat".

With the polls looking bad, the party having come third in the Eastleigh by-election, not to mention the ongoing rumblings about his leadership, Mr Cameron has to prove to all Tories he's the right man for the job.

Although no-one told me he wasn't, there were dissenting voices. The group, Conservative Grassroots held a meeting at the conference this afternoon. Their main gripe - Mr Cameron and his team just aren't listening; they need to engage with the grassroots.

With less than 1,000 days to go before the next election, the party has work to do. Despite grumblings, though, changing leader doesn't appear to be high on the list - for now at least.