2007 Peugeot 307 pulling to the left

When you hit the kerb you must have bent something on steering , suspension or chassis /subframe . You will need to find out what was damaged , knocking out the alignment ,rather than trying to adjust to compensate .You will need to get a front geometry check on camber and castor to verify it's out.It is nothing to do with Peugeot .You will either have to pay , or submit an insurance claim .It could just be a mechanical part needing replaced , usually is unless very hard hit . If it's that bad that they are suggesting puting it on a jig ,you should be able to see damage to cradle / subframe / floor etc . easy enough .Could be something simple like wishbone / susp arm bent . Hope this helps you .

Thanks for that. I'll just have to find a garage now that can do this - and not get fobbed off. These mechanics talk to women like we are stupid!!

The car is also tramlining the road really badly. Could this be associated to clipping the kerb too?

Yes , if the steering geometry is out it can cause numerous faults . As you say ,it's a case of getting the right garage who know what to look for , to spend time examining car .Sometimes it can take a while , measuring distances and checking angles etc. before finding what is damaged .Other times you may spot it right away. I have found listening to customers and asking follow up questions , invaluable at times . Male and female customers should be treated with the same respect .