Yes, it would seem that one tech for 1,000 mixed assets has become the norm these days. But I continue to believe that if the job is to be carried through "properly" (with 100% PM,
etc.) then the number of techs needs to be at least twice that (one tech for 500 assets).
And if we want to aim at six-monthly PM in general, and 90 days for critical kit (as I always have done), we're back to a figure of one tech for each 250 to 300 items (depending upon type).
But, as I say, if you want to arrive at an accurate figure, you need to work out how much time you're likely to spend on each item every year, add it all up, and divide by whatever man-year number you prefer to use. This is where spreadsheets* have really proved their worth. It was such a pain doing all that "long-hand" back in the Days of Yore!
I notice that Webbie has yet to tell us how many techs there are at the Royal Free. But he
has told us the the Trust employs 4,600 staff. So would it be too much to ask to have 1% of those as biomeds?

Techs view......... None, I hate doing PMs, it's so boring !
There's something wrong there ... PM
is the job! Sounds like management needs to do a bit of ... er,
motivating!*
I still have a few Lotus 1-2-3 ones kicking around "among my souvenirs"!