Exactly.From The Guardian:
Lady Casey said she found evidence of “over-representation” of Asian and Pakistani heritage men among suspects in local data – collected in Greater Manchester, West and South Yorkshire – and criticised a continued failure to gather robust data at a national level.
Such data was available.
Classic Sir Humphrey. If you do not collect the data then you can deny the problem exists. When finally you have to admit it does exist you point out that you didn't know because you didn't collect the data.