It's not a laurel it's an Aucuba
They are subject to phytophora infection which this looks like. Cut out all the dead bits. They can recover, mine have
Thank you. I've learned more than I expected today
So its an Aucuba. This explains why I couldn't track down an image to help explain the problem with my laurel shrub! I'll take your advice and hopefully it will pick up and flourish this summer.
Thanks again nutculet.
Mine has this and still recovers year on year with new leaves & growth. More a case of control than an ever lasting solution