It would not prevent emeritus peers being invited to contribute to specific select committees where they had some especially valuable expertise.

At the same time, many older workers are set to leave the sector, taking years of valuable expertise with them.

We already call on the valuable expertise of others.

But he takes with him an understanding of the role of print in founding his father's empire and a valuable expertise in digital developments.

In the process valuable expertise was built up in throwing up banks, reclaiming polders and embanking rivers.