Petchey (left) guided Murray (right) to 44th in the world rankings

Petchey quit as head of men's national training at the Lawn Tennis Association last summer to become the 18-year-old's coach on a permanent basis.

"We had a great run together but we've had a difference of opinion regarding some aspects of my game," said Murray.

"I've not thought about my next coach and will take time to find one who can help develop the next stages of my tennis. We are not in a hurry."

Murray's profile has rocketed up since his impressive displays at Wimbledon last year.

Bates praises rising star Murray

He has become British number one, risen to 44th in the world rankings and won his first ATP tour title when he beat Lleyton Hewitt at the SAP Open in February.

So Murray was quick to point out that he was not going to make any rushed decisions.

This is a terrible move by Murray - Petchey has really helped him From MH Have your say on Five Live

"It has barely been a full year that I have been on the professional tour, and I am continuously learning new things," he said.

Petchey, who worked with Murray full-time for 10 months, was philosophical about their separation.

"I am very proud of what we have achieved together - getting Andy into the top 50 and winning his first ATP title at the age of 18," he said.

"I have no doubt that Andy will make the top 10 and be a Grand Slam winner in the future and wish him every success."