
In the absence of any other local recommendations ...
I'm fortunate in that to date I've never had to use boarding kennels, but perhaps you could visit Ryslip in Bracknell and have a look? - or someone else may have used and be able to review.
I would expect them to be good, in that they have been in the same ownership for many years and are owned by a very prominent doggy family with a reputation to uphold. They also seem to retain staff (many must have been there for 20 years!) and their staff seem to be genuine dog lovers.
So, no personal experience, but worth a look I'd say.
M.