The department really began to expand in 1856 when the company pioneered infantile insurance, allowing parents to insure the lives of children under the age of ten. By keeping statistical records about policy-holders, Prudential was able to calculate accurate premium rates and improve the benefits payable on policies. By the turn of the century one third of the population was insured with "the Pru". By the mid-1870s, the company started to employ lady clerks and use "modern" calculators and typewriters.

工业部1856年开始扩展，他们开创了婴儿保险，让父母为为10岁以下的子女投保。由于保留了保单持有人的统计记录，保诚能够准确计算保单收费率，增加向投保人支付的赔偿金。到世纪初时，英国人口有三分之一投保于保诚。19世纪70年代中期，公司开始雇佣女员工，使用当时的现代化计算器和打字机。