A wall multi socket adapter

Owain_Moneysaver

Deleted_User said: I know, and quite rightly, the Council would not fit other sockets for me and, even if not too expensive, I don't think a 'private' electrician would be allowed to work on Council property 'electrics.' 

The council probably would - you might have to pay, but you might also get it as a free 'adaptation' due to disability - try going through Social Work Occupational Therapy if the housing repairs office can't help. 
A private electrician - or you - can only work on a Council property with their permission and this would include fitting a converter socket.

[Deleted User]

With the safety concerns, Myser, and advice, above from Owain and others, I will look on my roto adaptor as a temporary measure and use with care, one appliance at a time.
Once the lockdown is over I'll ask The Council about changing the sockets - ideally to the triple type.  If I have their approval and they can do it, that would be ideal.  As long as it is allowed, and if they cannot do it,  I'll find out how much a local electrician will cost and budget to arrange it as soon as possible.  Safety is important and I'm very pleased  to take on board the good information and guidance here, thank you.

Crimson