As per title, heat shield has come loose, the one that appears to cover the fuel tank (petrol).  2 questions..

01/  Is it safe to remove?

02/  Will it pass MOT without it? or, does it have to be there if fitted at factory, risk of fire, etc, etc

cheers in advance.

It's probably safe to remove.  Though it is an MOT fail now, fairly recent addition to the testers manual.

That is quite common on those cars, I just fitted oversized soft washers when the Shield had pulled through the fixing.

Fixing has snapped with rust when I attempted to unscrew the 10mm nut.  Just sheared clean off.  Looks like it's fixed to the fuel tank strap so I decided against drilling a new pilot hole to fit a pop rivet.  I've managed to get a bungee cord fixed and it's holding it on nice and tight at the minute.

39 minutes ago, Bar72 said:

..  I've managed to get a bungee cord fixed and it's holding it on nice and tight at the minute.

I'm sure it'll be fine, but just beware that bungee cord is often covered with a nylon sheath, which if exposed to extreme heat, may melt...

If everything else fails then I'm a great believer in using Fiberglass Resin as an adhesive. 

If it is fixed to something rusty though if may fail because the rust breaks its bond with the metal below it.

Car's at the end of the road I'm thinking.  Limped back a 100 mile journey today.

I make some oversized washers from thin stainless steel sheet when this happens. And if the nut offers no hope to be reused i use M5 nuts on the "bolts", they will thread themself to fit. They are still attached after 5 years.

Think the OP’s problem is the stud has snapped off the fuel tank strap so there’s nothing there to fix a nut and bigger washer to. There’ll be a creative way to fix that hopefully. 

13 hours ago, troy45 said:

Think the OP’s problem is the stud has snapped off the fuel tank strap so there’s nothing there to fix a nut and bigger washer to. There’ll be a creative way to fix that hopefully. 

Bungee cord has done the job.  There's a pilot hole up the back of the body I got attached to the wrapped over fuel tank and onto the other side, near the front, of the fuel tank strap.  Shield's still on after 200 mile so hopefully fixed.