With regards to Loss of Licence in NATS it is how Cleo reported it not Vlad the Impaler.
Provided you remain unfit for work your pension is topped up by your Loss of Licence Insurance . Your monthly Income is almost what you had whilst working, it is indexed linked both the pension and loss of licence.
Where Vlads colleague may be confused is that whilst your pay figure drops as you don't pay NI or pension contributions your monthly take home amount is almost the same as when working.
To get NI paid you have to go through the palaver of Incapacity benefit , you don't get the benefit but they pay your NI contributions.