Incident occurred due the ATCO having to abandon their work station temporarily and go to the strip printer, as the ATSA that normally 'stripped up' had been 'cost engineered' out of the Ops Room.
The ATCO concerned missed the few traces that turned out to be a primary only infringer in direct conflict with traffic on the ILS. This was as a result of an ATSA not providing the ATCO with regular strip updates. Traffic was arriving on his frequency without the timely arrival of a Flight Progress Strip.
Prior to the culling of ATSAs, these members of staff provided an integral part of the safety culture that was part of the normal and standard operation.