It is not difficult to find rabbis of all denominations willing to criticise the cost of keeping Pesach, as outlined in our report this week. But the response of Kosher London Beth Din, the kashrut authority, is silence.

KLBD will not deign to explain to those who rely on it why Pesach-approved washing-up liquid costs three times as much as normal, or why a box of 80 kosher-for-Passover tea bags costs barely less than a normal 240-bag box. This is, in effect, a tax on keeping Pesach - and one that is imposed by KLBD without any explanation.

In days gone by, such a contemptuous attitude to the community might have been permissable. Times have changed - and so must KLBD.

Update: The KLBD have contacted us to say that they say they did attempt to make contact in the preparation of this story.