Lost your CSCS card? dont worry , there is a solution online.
It’s a good idea to write down the Registration Number on the front of your card. If you lose your card, you can quote this or your National Insurance number to easily replace the card. Simply call the telephone number in Question 6 to request a new card. Replacement cards cost £36.
For more details
https://www.theccm.co.uk/cscs-card-renewal/