If you were to search the current IsaIDub zombie collection (via a VPN or mirror, as most ISPs block it), here are the headliners you would likely find. These represent the best of the genre, now available in dubbed formats.
(2002): A low-budget, gritty look at a deserted London 28 days after a "Rage Virus" release. 28 Weeks Later isaidub+zombie+movies+collection