The Dragons maintained the momentum they had garnered from last month's encouraging displays against Montenegro and England, as goals from Aaron Ramsey and Gareth Bale gave them a win that lifts them off the bottom of Group G of Euro 2012 qualifying, and ends Switzerland's hopes of reaching next summer's finals.

The game swung decisively in the home side's favour when the Swiss went down a man in the 54th minute after Reto Ziegler was shown a straight red for having his studs up in a challenge on Chris Gunter.

Another poor tackle on Gunter by Timm Klose, just six minutes later, allowed Ramsey to score his fifth international goal, from the penalty spot.

Bale then sealed the win by converting from Steve Morison's through-ball for his first Wales goal in 12 months.

The performance was the most complete of Speed's tenure to date, but when asked if the end of the current qualification campaign was coming too soon for his side, he said: "I don't think so.

"I don't think we are ready yet to compete and make a good go of qualification. If a campaign started now it would be too soon, so when the World Cup qualifiers start next September that's when we are aiming to be ready.

"It's not frustrating, it would come too soon at the moment. If we had got a result against England there may have been a chance of qualifying but I am happy with how things are going.

"Our aim is to qualify for the next World Cup and we haven't turned things around yet, there is still a way to go. The last few games have been positive and it's great encouragement for the future but we are not round the whole corner yet.

"We have the potential to do something special. Everything has got to be right and fall into place, but the players and spirit we have got mean we have a chance of doing something special but it does not happen overnight and we need to keep improving and keep working."

While Speed says his side are not ready to compete for qualification just yet, he was generally happy with their performance, particularly during a first half where Switzerland had the edge in terms of possession.

"I think in the first half the main thing for me was that we were still in the game. I told the boys getting to half-time at 0-0 means you always have a chance of winning," Speed said.

"They caused us a lot of problems in the first half and had some good opportunities and I was glad to get in at 0-0, as I knew when the game got more open we had the players to hurt them. I am pleased with the resilience of our defence and then we went on to win the game."

He added: "I am always looking to improve, I am delighted with the performance and result but you always look to improve. I have been in that position against 10 men and you can switch off but thankfully we got the second goal and went on to win."

Tottenham winger Bale was named man of the match, just days after being named Wales footballer of the year for a second time, and Speed is not sure the 22-year-old can get much better after another stunning display.

Speed said: "I am not sure he can improve that much but it is important.

"He is an excellent player and when in full flight he is a sight to behold and is very exciting."