Indeed, Kane has had to cope with the burden of being his side's only reliable striker, so far failing to score a Premier League goal.
Mason, meanwhile, has also been operating in a position Tottenham have found themselves short on options.
But, with Roy Hodgson's England side, the duo were all smiles as they prepared for the Three Lions' trip to San Marino and Wembley clash with Switzerland.
Elsewhere, Swansea City midfielder Jonjo Shelvey simply looked a natural in the England squad, despite not being a regular within Hodgson's side.
Shelvey was seen in conversation with the England boss, as well as competing with his team-mates for the ball in practice.
The Swansea man has made a terrific start to his Premier League season but the big England stage brings something relatively new for him (although he has played for his country before). Shelvey couldn't quite cut it at Liverpool but will he succeed on international duty now that he is a more mature player?