When you book your wedding you pay a £100 non-refundable booking fee at the time of booking, this has not changed.
The balance of your wedding package normally becomes payable, 14 days before the date of your wedding and this has not changed. So, you can safely book your wedding photographer without fear of losing your payment.
We will observe all current Health & Safety Regulations.
I’ve provided a link below to the Wedding Industry official Guide on Wedding Refunds in connection with the Coronavirus. pandemic.

By the Association of British Wedding Businesses (ABWB)
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https://www.abwb.org/post/covid-19-explanation-of-cma-guidance-on-weddings