Markus,
first, very sorry to hear about your dog and the Lyme. That is just so hard to take. Both my recent dogs have had health issues that were born from the ticks.
Do a search on the Drakeshead line in England. They have very nice dogs and are written about quite a bit. I didnt remember seeing a lot of chocolate dogs in their line.
Eddie is close to them and has one of their pups.
I have a friend who has a dog from the Windrose Kennels here in the USA. Do a bit of reading on their site. The Windrose dogs are smaller, in the 49 to 55 lb class. Very nice dogs.
English to me means something different than what a lot of breeders here are pushing with their efforts.
Lastly, whatever color or sex it is, a new wiggling pup is a good way to help ease the hard times after a loss. I always wait too long to get re started.