Well I have seen it all now, good quality string to hold the F&E tank in place. The problem with this one is the whole heating system, extension and loft extension was done by a chap who thinks its dead easy to do this sort of work. Lets just say the extension work is just as bad as this F&E tank. He sold this house and made loads of money and allegedly set himself up as a builder,,, sorry I should have put cowboy in front of that!

The photo below is some more of his handywork can you spot the mistakes? The electric cable that can be seen runs a shower, only problem it's off the ring main.