Mr Cameron was head of PR and social media and had been with both Bright Grey and Scottish Provident, part of the same group, for just over six years.
Ms Holmes, who has been made redundant, had been with the company for a little over five years. Both were employed in the Edinburgh office.
Financial Adviser understands the move is as a result of all PR being centralised in the London office following a restructure.
In October last year, Royal London announced it was scrapping the Scottish Life, Bright Grey and Scottish Provident brands as part of a strategy to bring all its life and pensions business under the Royal London name.