How can fix in place dash speedometer on Peugeot 206?

can anyone advice me on how to fit back in place the dash speedometer console, I bought the the peugeot 206 WReg a week ago and as I was giving the interior a clean I noticed the the dash speedometer console moved to the inside about 1cm and wiggling left and right..... can anyone tell me what caused to do so and how to fix it back to place please