Prince of Wales's staff worked in Whitehall Constitutional monarchs should be above politics. What is he doing except to advance his own private agenda? It's outrageous. Suggestions that they had been posted to Whitehall in order to influence policy of behalf of the Prince were strongly denied. Two of the staff concerned were seconded to the Cabinet Office while the third went to the Department for the Environment, Food and Rural Affairs. One has now left the Prince's employment. A Clarence House spokesperson said: "We have had two secondments to government departments in the past two years. The secondments were suggested on the basis of professional development and the paperwork was arranged by the relevant HR departments. One secondment was one year and the other was for two years. Both have come to a natural conclusion. There was no official feedback mechanism and no regular meetings were attended with the Prince of Wales's Household. The secondments were on a like for like basis. One secondee has now left Clarence House and the other is due to return shortly after a sabbatical. Over the past five years, in addition to the two secondments already discussed, there has been one other secondment, for six weeks to the Cabinet Office. We have no new secondments planned at present. The idea that not only has he been writing letters that are so toxic that we cannot see them and they might imperil his position as monarch. We're not allowed to have details of what was said. You can't infantalise the British public in this way. The disclosure comes after it emerged last week that the Prince had had 36 private meetings with Cabinet ministers since the general election in 2010.