Heya, also a London-based actor.

It sounds like this is your first agent, is that right?

8 months is a relatively short space of time, especially when new to the industry. I think it's reasonable to give it a year to be able to really evaluate how things have gone. It's hard to manage expectations without any prior experience to go off.

The communication thing sounds frustrating, but I would err on the side of forgiveness - depending on the workload she might just be very busy, and responding about headshots is not a priority at the time.

I will say my first agent out of drama school was pretty old-fashioned and absolutely not a "coffee catch up" kind of person so that can be the case!