Andy Murray has claimed that he wasn't enjoying tennis when he won the Wimbledon title two years ago.

The Scottish player ended Britain's 77-year wait for a home-grown winner in the men's singles with his straight-sets win over Novak Djokovic, but he has admitted that he was in pain due to a long-term back injury.

He told The Telegraph: "When I won Wimbledon, obviously it was great and that does make you happy. But a lot of the time I was playing I was in pain. So I wasn't actually enjoying practising and that. I wasn't hating tennis, and I don't know if resentful is the right word but, when I stepped on the court, it was causing me pain – and I wasn't actually enjoying that.

"Coming back from surgery I found hard as well. I thought at the time, you have the surgery and when you start again you might struggle for a little while but then your body would feel OK. For me it wasn't actually the case. My back still hurt and I was worried about that as well.

"But now, I love practising, love going in the gym, love training hard. For a while when I was having problems with my back, I wasn't enjoying it."

Murray opens his 2015 account against Mikhail Kukushkin on Tuesday.