Brize LARS Hours are (As per the BINA):
0800(L)-2000(L) Mon-Fri
*Outside these hours, subject to controller workload.
I understand that these hours have at last filtered through to some civil documents. Though dont ask me which ones.
The manning in the Services these days is such that outside these hours, LARS can not safely be provided if Brize Traffic is being dealt with. I suggest rather spending time chatting to Brize, you phone the Defence Minister and ask him for more money and people.