Government admits that PIP costs more than DLA

From Welfare Trends Report, Office for Budget Responsibility (OBR), January 2019

Growth in disability benefits spending has continued in recent years, despite attempts to cut spending on working-age adults significantly through the replacement of DLA with PIP. The Government assumed initially that PIP would be rolled out by 2015-16 and that it would cost 20 per cent less than DLA would have done. In fact, by 2017-18 it was costing around 15 to 20 per cent more, with rollout only around two-thirds complete.

There is further information if you follow this link: