How does the seat numbering system run at the NIA Birmingham?

Does each block begin at 1 or do the numbers continue across into the next block?


I've checked the seating plan but it only gives blocks and rowsHow does the seat numbering system run at the NIA Birmingham?
Starting at the front left block nearest the stage, this will be block 1 with it's own numbering system. The next block along is block 2, etc etc.