British Expats - Thinking about moving back to the UK

Hi all....it's been on my mind for a while now, I moved here in 2011, but I just don't feel like I am settling here.
I originally moved out here for a relationship, after 4 years that didn't work out, it's been 2 years since we separated (this isn't a crazy run back home kind of thing) and for the past 6 months I've done nothing but think about moving back.
I live in Brantford, not one of the nicest areas! But I have never really liked it here, I'm not used to the lifestyle in this city, and no matter what I do I just can't seem to settle! I used to work in administration and human resources (ex British army), and now I work in Timmies, it pays the bills, but finding a job that pays more than min wage around here is super tough, I don't have qualifications but I have a huge amount of experience, but getting an interview is like trying to find a needle in a haystack!!!

I guess my main questions would be...where do I start if I decide to move? I have a dog (bull mastiff), who would come back with me too, I have a house of my own, which could be easily sold! But can anyone suggest where I look or find info for the following:

- flying a dog back to the uk, costs, vets etc
- sending back boxes of personal things (I'd leave as much as I can, but after 5 years, it's hard to fit your life into a suitcase)
- anything else I might not have thought about this end?
- I transferred my pension over here, would that cause any problems moving back? Obviously I know I can't claim it again!!

When I get back, it should be fairly simple...I would move back in with family until I find a place, my sister works in a recruitment agency so getting a job should be straight forward.

It's still just a thought, but I'd like to fully research my options before making any decisions!
Thanks in advance for your help :)