Walton Robinson are genuinely awful. When we encounter problems with things in our flat, no one ever wants to know. Our assigned contact is never in the office (or deliberately ignores his phone). Just one of our many examples is the broken shower- 2 and a half months, lots of phone calls and five angry visits to the office later, the shower is still broken.
The worst thing about this is that Walton Robinson's admin fees are the highest of any we checked! We have yet to figure out what we are paying for!
I strongly urge you to take your business elsewhere.