Northants coach Lehmann enjoys 'Bazball' brand but warns Ashes loss could spark 'lots of change'

England have revitalised Test cricket with ultra-positive brand of play under head coach Brendon ‘Baz’ McCullum and captain Ben Stokes, but after a win-heavy start, results in recent times have been mixed.

Series have still been won against the likes of New Zealand, South Africa, West Indies and Sri Lanka, but England have failed to beat Australia or India in the Bazball era and also lost to Pakistan last winter.

Lehmann says he enjoys watching the brand of cricket England play in Tests, but feels the Ashes, which start in Perth on Friday (Nov 21) are going to be make or break for the current set up.

"England haven't won a series away from home for a long period of time," said Lehmann on ABC Sport's Summer Grandstand show.

"Bazball has been the big reinvigoration of English cricket, and having been there last winter and seen all that, they love the way they play and it is good to watch.

"I do enjoy watching it as well, but if it doesn't win then what happens next? If they lose this one then there will be lots of change.

"They have to play well here, and if they don't there will be big changes in England because people will only put up with things for so long.

"Yes, the games are finishing in three and a half days and they do play fast cricket.

"I think England will go with a batting-heavy side here and try to bash the Australian bowlers, and then they will try and blast us out with their quicks, Jofra Archer and Mark Wood.

"That is going to be their game plan, and it is going to be fascinating to see how Australia cope with the pace, and how we play."

The issue with England's fast bowling pair Archer and Wood is that neither has played hardly any cricket recently.

Wood, who has been passed fit to play after suffering a hamstring scare in England’s warm-up match against the Lions at the weekend, hasn't bowled a single ball in anger since February, while Archer has played only a handful of red ball games since recovering from a long-term elbow injury.

Their fitness and stamina has to be a concern for skipper Stokes, but Lehmann believes England have to wheel them out and ensure they 'keep playing' - especially as the first three Tests are back-to-back and done and dusted in the space of four weeks.

When it was suggested to Lehmann that Archer and Wood would not be able to last the pace of a five Test series, the County supremo said: "They don't need to, and that's what everyone forgets.

"Just get through the first three Test matches, it is probably 12 days of cricket, and then there's a big break inbetween, so they should be playing all of them.

"Then they can worry about the last two Tests when they get to them.

"Those two bowlers are fast, and they can cause some real trouble for our lower order as well.

"It is going to be hot, and if it is, then they have just got to keep playing because England's next rung of bowlers are okay, they are steady.

"But they don't probably do enough with the ball for me, so they are going to have to get wickets with those guys (Archer and Wood).

"Archer will hurry them up, he has a weird action where he comes on you very quickly and if anything the big one for me will be will they bowl too short?"