Sir Cliff Richard's special diet requires him to carry his own bread on tour with him.
As part of the diet, 'The Devil Woman' singer is required to wheat and dairy out of his daily intake.
Thus, the singer needs to be careful what he eats when he's on the road.
"It is a bit of a nightmare. This last trip I took my own bread everywhere," Contactmusic quoted him as saying.
However, Sir Cliff is happy because his diet is paying huge health dividends for him.
"What I've found is the first four months I lost an inch and a half (around my waist)... (and) whatever I ate, nothing went on," he said.