The environmental, health, safety and engineering services company announced that the financing by Permira Credit Solutions II would support its continued international expansion.

Permira Debt Manager's direct lending fund will act as sole lender to RSK. The loan, which was arranged by Dow Schofield Watts Corporate Finance, will be used to convert existing amortising debt into a flexible bullet repayment loan and supply additional funding.

RSK now has more than 1,000 employees with offices in over 20 countries as well as a turnover of almost £100m.

Alan Ryder, founder and chief executive of RSK, said: "We're delighted to have secured this financing and to have expanded our operations. The financing will allow us to grow further, for example we plan to recruit geology and engineering graduates into our training programmes to specialise in growth areas such as nuclear decommissioning and geomatics, creating more jobs across the UK."

Dan Hatcher, investment director at Permira Debt Managers, said: "We are very impressed by what RSK have been able to achieve over the past 25 years from their own resources. The company has reached a position of strength in the European environmental and engineering consultancy market and we are delighted to be partnering with them to support their next phase of growth."

Mark Watts, a partner at Dow Schofield Watts Corporate Finance, said: "RSK is an outstanding professional services business growing rapidly both in the UK and internationally. The bespoke funding structure will assist RSK in continuing its rapid development."