You can get this sorted at a good exhaust fabricator's place, I'd advice buying exactly the correct repair part from
www.senioraftermarket.co.uk - that is what I did quite a few years ago after my original fix by my exhaust fabricator proved to be less than pefect!
Can't edit - why?
Anyway, I've changed the web address of the supplier, these people make these flexi sections for exhaust manufactures and also supply repair flexi section that have short rigid stubs that you can cut to size. If the exhaust place just use as close as they have - they can't carry the full range, then you will usually end up getting a flexi section that is too short, and that will cause noise, in my case they also used a section that was big large in diameter and that caused nasty resonances. When challenged about the effectivness of the repair, they denied that anything I said was true and could be contributing to the fouling and resonances that the car's exhaust now had - they design and fabricate exhausts for a living, which is true! My only way out was to use the measure of misalignment - rubber mount was too far forward so it touched the crossmember when reversing up my driveway, and also measure the exhaust diameter at the flexi points, then order in the correct part which I paid them to fit - result, exhaust as good as new!
In your case, don't worry about the outer protective wire mesh being bulging, by do worry about the general exhaust misalignment as the exhaust should be in the centre of the heat shield - I'd expect the exhaust place to be smart enough to realign the exhaust before replacing the flexi. I used the place in Falkirk, useful pleasant enough guys, probably good at knocking a new exhaust up for an American car or a Capri or Jap import, but not smart enough to return a leaking Polo 9N exhaust to as good as new first time round.
Now I can edit this one, make sure you get the ILOK option as this flexi is near the manucat.