Worth noting that BCA relies on the clubs to send in lists of their CIM members and supply their email addresses, with the permission of their members. Some clubs do not supply lists of their members' emails, though they do have them for their own use.
So the provision of electronic voting for individual members relies on the clubs to provide the information to enable this to happen. I appreciate that some clubs may be unsure of their situation re. data protection but I believe it is correct that, if the club tells its members that it intends to provide this information to BCA so that the members are able to take part in voting, then this is OK provided the member approves. I assume also that, if an individual member asks the club NOT to provide the information to BCA for this purpose, then the club will not do so. In which case the individual has willingly disenfranchised himself and there is no obligation on BCA to attempt to send him a postal vote.
I'd also assume that, if an individual does not have a useable email address for any reason and notified his club/BCA of this, then BCA could supply him with a postal vote.
I think Bob Mehew has posted elsewhere in this thread on the difficulties of providing the postal votes for all BCA individual members re. the CRoW proposal - it was done but it cost a lot and took an immense amount of effort. If we are able to set up reliable electronic voting it would make life much simpler all round and allow us to be far more democratic.
If electronic voting were to be available for all, then the question of someone requiring a proxy vote would be much diminished - though it could be made available for special cases. Would this not be a different scenario from masses of people voting by proxy because there was no other choice than to attend the meeting?
Note that I don't purport to have all the answers but I'm speculating on possible scenarios to see what other people think and to find out whether there are other quirks or glitches which might catch us out.
I can't remember who it was who said something on the lines of democracy being the worst form of government, until you looked at all the other scenarios ...