There has been a second leak of the foot and mouth virus at an animal research facility in Surrey.

The site, in Pirbright, near Guildford, manufactures live foot and mouth vaccines and was at centre of the foot and mouth outbreak earlier this year.

Merial Animal Health, which shares the site with the government, discovered a leaking valve through which the live virus had leaked into a waste treatment system but did not escape into the environment.

Defra has now suspended Merial's vaccine licence.