Have you approached companies such as ASC Signal or GDSatcom (Vertex, Prodelin)? They'll get a local agent to contact you.
As said before regarding the UK regulations, you are limited to a 1m dish without the need for planning permission. If you want a bigger dish in your planning permission to the council you will have to submit a technical justification. You have to justify and have some very good reason why you need to receive foreign satellites and why you don't want a UK Sky package which you would be abe to receive with a 60cm dish. And if the broadcast you are after is only intended for foreign reception, your luck is down for a start.
You will have to state whther or not this is for commercial purposes and if you have the relevant permission to do so.
You will of course provide evidence that this is not going to be a public eyesore, and the you have spoken to your neighbours and they are happy to see this out of their bedroom window.
You will have to provide evidence of where you plan to site this dish and you have the land owners permission, and that you will install the foundations to the manufacturers specification, and that the dish is not going blow away in the wind.
You will also have to prove that the dish will not be transmitting and therefore expose the public to non-ionizing radiation.
And you have to think a bit more about what dish you want. If you don't want a tracking antenna, you could go for a two-part bolt-together VSAT dish which could probably be put up with without cranes etc - but don't quote me on that.
If you want a tracking antenna then you re looking at a petallised metal dish. This type of dish will need a crane or telehandler to lift it in place, and then that means you need contractors and then your contractor will have to comply with other H&S regulations such a providing a method statement and public liability insurance, risk to the public, building site regs... etc.
I'm not sure of your intentions but if you are not serious about an installation, not many professional insallers are going to waste their time just for a quote.