My dog was on the lead for a reason!!!

[NurseRosie]

I love dogs. I love most dog owners but not all. I'm having a problem with my 2 year old Cockerpoo. She is unsociable and snappy with unknown dogs. She has never bitten, just gets stressed and barky. What can I do? I've approached a dog trainer about it.
I get really upset when other dog owners get offended by her behaviour, but do people not understand that when she is on the lead, it's for a reason? A lot of owners will still let their dog approach and then get pissy if I'm not quick enough to react and she freaks out.
Most of the time she is fine when off the lead with her friend for support, she just goes back on when big dogs are about. I try to walk her in quiet places.
Could it be anxiety?
She is a very loving and cuddley dog, great with children and a real character. Almost perfect but how can I help her be calmer?

I get cross about this too. DDog broke her back nearly 2 years ago (thank you to all who sent supportive messages at that time). As a result she has to be walked on a lead and is never allowed off lead- the risk to her spine if she ran or jumped is too great. She isn't able to do any form of rough play.

But still dogs are allowed to run up and sniff and bounce about- as they are free and she isn't she gets defensive and stressed and growly (rescue dog). Then owners get sniffy about controlling our dog- ummmm, the one one the lead? Under control, but upset about it??

It is frustrating. Things have been a little better with pooch. I've been keeping her on the lead and walking her at quiet times. Also booked some one on one training x