UK wild camping, fire, kayak

Hi everyone I read a lot of treats till now but I couldn't find anything in which I am interesting in. I would appreciate some help. 
I am coming from quite a wild country where you can do camping almost everywhere without restrictions, so here when I read in the forums I don't see any freedom . 

 So to the point. 
I am having some summer vacation now and I wanted to spend it in the wild on a few places around UK. If anyone know and places where I can go with three more people where we can camp for around 4-5 days near lake or river ( I have a kayaks which I want to use ) and to be able to have a fire during night without any problems from the authority. Of course the usual rules apply like not damaging the nature and collecting the rubbish. 

As I was reading i think I want impossible thinks but I decided to give it a go if anyone have Expirience in that I will be appreciated.  

Thank you

Scotland is quite easy about wild camping and there's no shortage of lochside venues for doing it.  If you're up to paddling on the sea then the list gets really big.

For starters, this is a nice spot...  No shortage of firewood last time I was there.

Pete.

Generally speaking wild camping isn't universally allowed although much is tolerated.

Rivers have many limitations and are not actually long enough for much of a trip. Many have no access.  Lighting fires is to a great extent frowned upon.

Add them all up and you will find your options are limited in this country. There is not the need or tradition of long wild trips bearing in mind that I doubt that there is anywhere that is not a days walk from the road.  Remember that all land is owned by some one.

As suggested the north of Scotland is your most likley place. What ever you do do not think about taking fish or game from anywhere but the sea. Poaching is very illegal.

I don't wish to sound negative but fell that it is only fair to enlighten those who come from a different set of values.

There are some excellent books.from Scottish canoe.association about sea paddling and touring canoeing/kayaking. There are some gd routes recommended. Fires are generally not a gd idea unless on a beach where it's away from ppl and you remove trace of fire (light it in tidal zone on beach or where it will get washed away on rivers). Also inland lochs in Scotland sometimes seem quiet on the side you pitch up but a road and properties on other side and fires are obvious. Plenty of ppl have.fires just try and be very discrete as not really allowed without landowner's permission.

An easier option is a fire bowl. Grilliput is one but you could use.a honey stove with a hive kit to make it bigger. I do know some make hobo stoves for fires out of metal tins or cutlery tins. Even heard of open canoeists taking the metal drum from a washing machine to contain the fire and cook on. Never seen it but heard it was a large homemade hobo stove. Having the fire on a gravel beach is.also gd.

It is of course not strictly legal.

Thank you very much guys for the advises.

Pete I can try your suggestion this summer Thank you

Just checked out Petes link. Loch tay is a gd paddle I've heard. If you need to hire a canoe I believe There's a shop in killin that does so. Even dropping them off at your ingress point and collecting you at the egress I heard.