Sam Allardyce admits there is plenty to work on despite claiming a win in his first match in charge of England.

The Three Lions needed an injury-time goal from Adam Lallana to open their 2018 World Cup qualifying campaign with a last-gasp 1-0 win over Slovakia in Trnava.

Allardyce joined the likes of Roy Hodgson Sven-Goran Eriksson and Kevin Keegan to win his first match as England boss but he felt at times it wasn't going to occur as his side, with an extra man from the 57th minute, spurned chance after chance.

"I did think the win might not happen for me," Allardyce told Sky Sports News HQ.

"We were coming into the final throes of the game and when you've heaped so much pressure on the opposition and not put the ball in the back of the net, it's something that when we get together next time, we will do a little bit more work on it.

"Having so many chances again and not converting them enough, it's something that I'm going to emphasise to the players that we've got to get a little bit better at, at this level of football."

In the end, however, after a disallowed Theo Walcott goal and 11 attempts on goal, Adam Lallana score this first international goal in the 95th minute to give England a winning start on the road to Russia.