The new prime contract covering United States Visiting Forces Uk bases is worth £70m a year, adding up to £350m over its five-year duration, with an option to extend for a further five years.

MoD procurement arm DIO is now inviting expressions of interest for the new commercial arrangements.

It will include the provision of maintenance and repair services on all UK military sites used by USVF.

The scope includes a 24/7 emergency helpdesk, pest control, maintenance of housing, hospitals and utilities infrastructure, grounds maintenance and rubbish collection.

The contract will be awarded by spring 2016, coming into service in late 2016.

DIO will host an industry day at The Defence Academy, at Shrivenham, in Oxfordshire, in April for potential contractors and supply chain businesses.

A contract advert and PQQ has been published on the Defence Contracts Online  website. All expressions of interest must be completed by no later than midday on 14 May.

Matt Foley, DIO’s Head of Next Generation Estate Contracts, said: “The new arrangements will provide a robust commercial framework, which will enable us to access a highly skilled supply chain.

“This will not only strengthen our ability to support the United States Armed Forces, but will also provide best value for money for the US and UK taxpayer.”

Stuart Ellington, USVF Prime Project Manager, said: “We are looking for contactors with robust supply chain arrangements and would also encourage small businesses to bring their expertise and experience to the attention of potential bidders for these contracts, as early as possible, to explore any sub-contracting opportunities.

“The successful bidder will need to work closely with the USVF on the UK estate to meet their requirements and deliver a high level of service.”