Personally I don't like to feed kibble as well as raw as I don't see the need, but I know there are plenty of people who do so successfully for all sorts of reasons. If you decide to feed both I'd suggest feeding them as 2 separate meals because kibble takes a few hours longer to be digested than raw so I think it's a bit harder on the dog's digestive system having both together than separately.
Have you considered Natural Instinct?
http://www.naturalinstinct.com/ or Nature's Menu?
http://www.naturesmenu.co.uk/William and Louis have Natural Instinct for about 50% of their meals and "DIY raw" from various sources makes up the other 50%. I tried them on Nutriment some months ago and something in it, possibly the coconut oil, made William throw up, so I went back to Natural Instinct. I think there are probably more Natural Instinct stockists around the country than Nutriment stockists, but worth looking at both websites to see if there's a stockist near you.
Nature's Menu is sold in Pets At Home, so could be useful if there's a PAH near you. They don't tend to stock the full range though and personally I wouldn't feed the raw nuggets with rice in them as dogs don't need rice and the meat content is low.
I don't worry about the hygiene aspect. My dogs are fed in the kitchen, which has a vinyl floor, easily cleanable if they dragged their food out of the bowl (but they don't anyway). Their bowls are taken up and washed after every meal using normal washing up liquid and kitchen roll. When I prepare any raw meat, for the dogs or prior to cooking for people, I just stick to basic hygiene rules and I've never had any problems in 4+ years of raw feeding William and Louis or in the 16 years of raw feeding my previous 2 Cockers.
Edited to add: My 2 drink much less water than when they were fed kibble as they get a lot of the moisture they need from the raw food. They also produce less poo and it's easier to clean up and less smelly
