These are all sub standard and not to current 17th edition regulationsand it is highly reccommended that they are changed to newer rcd switches
to give the safest protection from electric shock and fire risks.

E mail your picture of your fuse board for free ,
no obligation adviceand it will be responded to or call to book a visual inspection for a clear understanding of the condition of your electrical system.

since 2008 the electrical regulations changed to ensure all electrical installations have rcd protection.
These switches in thge consumer unit provide the safest protection for the electrical circuits.It is very common for properties to have been inspected and
certified without thgese in place . Installing these upgrades have saved lives.The rcds detect a different type of electrical fault helping to
prevent and cut down on electrical fires and shocks from appliances. Carrying out installation of rcds to the electrics will improve the ability ,
in cases of accidents, incidents and emergencies,
to prove that thye electricswithin , have been installed, tested and maintained in line with requirements.