Well Brendan I can concur as with most Vlads that I am finding this a true impaling. As can be depicted by how dispersed throughout the grid my answers are. Thanks for all the help on 10a. In fact a brilliant clue.
I wondered if my wits were scrambled by my morning parkrun (Bibra Lake, Perth, Western Australia).. To my relief and surprise I finished with what I'm sure are the right answers – although I would prefer not to be asked to parse some of the clues fully!