I use a sausage making company for some of my bait ingredients and mixes they have a very extensive range of ingredients and dry ready mixes that can be used for bait. They have several branches in the UK and have a reliable delivery service. They are called Weschenfelder you can shop on line at Sausage Making Supplies From Weschenfelder's | Weschenfelder Sausage Making have a look at their web site I think it may be of interest to you.