It's the same all over the country because of lockdown. I was fortunate in that the local "Dogs' Trust" had already had experience with me and so knew my setup. When I contacted them about a pair of girls (Bracken and Clover, if you remember) they simply sent them over with a handler to see how we all three would react. Next thing I knew, I was giving card details for bank account over the 'phone. Whenever I settle into an armchair, I end up wearing them! Such company!!
Why not see if your local one might do something similar. (Obviously, if the dog they are offering is difficult, then they will not.)