Parking in London (Stanmore) - possible on a weekday?

[pinotnow]

I am going to see a matinee performance in London with the dc on Wednesday. We've done this kind of thing many a time and either stay over and do the parking on someone's drive thing, or if on a weekend, park at Stanmore and travel back the same day.

For some reason I had forgotten until now that we are going on a weekday and I haven't sorted parking. Is it stupid to even consider Stanmore on a weekday, or what time would I need to arrive to get a space?

Any advice would be great - I think I've really messed up here!

@pinotnow

I'm looking at parking at Stanmore on a weekday morning over the summer. I wondered if you got a space?

I wouldn't get there until 10am ish so worried it will be full by then... if it gets full, I have no idea.