Alex,
Thank you for taking the time to respond.
I am very sympathetic to the difficulties retailers are facing but as a customer who has spent over £1000 over the years in store and online I did not understand why a photo of the voucher was not acceptable when it is simply a piece of paper with a unique code printed on it. However, I accept that you are looking into it but until the issue is resolved there are a lot of people who I think may be dissuaded from gift vouchers until their online use is available; particularly in these current uncertain times. SBS, for instance, have had the option to use vouchers online for years.
I look forward to the stores reopening and being able to use my voucher.
Regards
Dan