HM Queen Elizabeth II's State Funeral - managing extra bank holiday

Hi everyone,
Long time no posting from me as I exited HR for a few years.

I'm after a bit of advice. I'm currently working as an agency worker for a government body. They are very likely to give their employees the BH as an extra day's a/l, as they did for the Jubilee. As I've passed the AWR threshold, should I also receive a pro rata addition to my entitlement? Otherwise I think I will have the choice of whether to cash in some of my a/l hours or be unpaid for the day as it is unlikely they will want me to work when no one else is. (I didn't think to ask either my agency or workplace for the Jubilee date and used some of my leave which in hindsight I think wasn't right.) If you have agency workers, what it your expectation?

Many thanks,
Gemma

Hi Steve!
Lovely to see the community as active as ever