Not really. According to that report Defra have only confirmed that it is a strain of H5, not that it is H5N1. Birds catch strains of H5 all the time and have done for centuries.
If it is H5N1 it is unlikely to cause the levels of human cases that we have seen in Asia because our standards of animal husbandry hygiene are higher and we don't live in close proximity to the birds.
At the moment humans are catching the avian strain: it hasn't made the jump to a human strain yet.
The WHO scientists believe that it is most likely to happen in Asia (for the reasons given above).