What approach to take if I believe...

[Deleted User]

lonibra said:

I hope this is not a stupid question.
All my investments are in BTL property and Vanguard stock market index funds (ISA and pension). I don't actively manage it or anything, just put in money every month.

Based on what I see in the sector that I do business in, I believe (I might be wrong!) that we have already entered a period of severe labour scarcity and that this will at some point result in significant and sustained inflation over the coming years. 

I fully understand that I might be wrong but just wanted to know from an investment perspective what I could do different (if anything) to hedge against this possibility?

You're right. Can't get a good plumber, electrician, carpenter nor plasterer since we kicked them all back to Poland.
On a practical level, get all the upgrades on your properties done before prices double.
The long game is that your BTL investments make you heavily invested in £ assets. Can't make a medium term prediction but over a century £ has been sinking steadily against $: - so my advice would be to invest in Nasdaq/Wall St.. - win/win.