So I've been sorting out my diet for the last month or two.. and I do still give in to the odd cravings for pizza or whatever but generally I've been eating more regular, and trying to get more healthier options in the diet. I still have a long way to go, but I feel its now time to start hitting the gym as well.

My previous gym routines have been quite sloppy and all over the place, I would dabble in cardio then weights then mix them up but I never stuck at anything, so I figure I need a brand new fresh start.

My primary goal is to lose fat and just have a fairly slim toned body, so that when I breath out at work, well, so I will breath out rather than try and tense all the time as to hide it!

I'm not MEGA fat or anything, but it is noticable and you can get a good handful which is BAD for me.

So, aside from my diet improving, what can I do in the gym that will best burn away this fat?

I am going to be going to the gym 4 - 6 times a week, so I don't lose interest I will set myself goals and always prepare my clothes and bags the night before work so I can go straight after, and I will always go BEFORE I see friends/girlfriend/do anything else!

Do I go with weights, free or machine, or do I go with cardio, treadmill or elliptical, or mix it up, or what? I can work out my own weights to start with or distance to run or whatever, I just want, to start with, the fastest way to see results, and then I will focus on a much more long term solution.

look up interval training, good way to burn fat without losing muscle, try to keep carbs to a min (for weight loss) , id try to fit in weights as well, as building muscle increases metabolism which in turn burns fat, what i do is something like this:

Monday: Chest x 5 exercises and triceps x 3 exercises, 20 min interval training
Tuesday: Cardio
Wednesday: back x 5 exercises and abs x 3 exercises
Thursday: Shoulders x 3-4 exercises and bicep x 3-4 exercises, 20 min interval
Friday off
Sat: abs and cardio
Sunday: off

is paleo that caveman diet of steak and lettuce? can you get carbs from meat? I'v seen a tribe of mongol horsemen that only eat horse meat on tv but I feel like people need carbs to fuel muscle movement.

in teerms of weights or cardio = BOTH. Strong muscle is built over time with cardio, big muscle is built quicker on anaerobic exercis.

On your rest day, do at least an hour cardio.
On your training day (Free weight please), warm up with a 10-minute run and stretch and finish off with abs exercise and 10-minute run. Easy!

So if I start my plan today, as follows:

Monday:
Warm up 10 min run
Chest
Triceps
20 min interval training
abs
10 min run

Tuesday:
Cardio for an hour

Wednesday:
Warm up 10 min run
Back
abs
warm down 10 min run

Thursday:
cardio for 1 hour

Friday:
10 min warm up run
Shoulders
bicep
20 min interval
abs
10 min warm down run

Sat:
1 hour cardio

Sunday:
abs and cardio

Any suggestions or changes?

plan looks good but factor in your carbs and protein intake should be increasing as well which will add to your weight if not dealt with.

Not quite sure what you mean here?

I should watch my carbs,
and increase my protein intake?

carbohydrate is a requirement for anaerobic exercise.

Protein is essential for muscle development

Your going to burn yourself out training 7 days a week, give yourself at least 2 days rest, and id cut warm ups, warm downs to 5 mins, and dont forget to stetch after warm up and after warm down, also you might wanna add some leg exercises in, i dont do legs atm because mine are massive, and least priority for me.