So the Code of practice for location filming in London was initially developed in order to provide filmmakers with everything they need to have a smooth shoot in the city. It's an agreement that aims to insure that industry is unaffected, all involved in the location act responsibly and professionally, and that the impact of filming on people and businesses is minimalistic.

You can find a link to the Code of Practice here: http://filmlondon.org.uk/filming_in_london/code/assets/documents/code_of_practice_pdf

When you're filming, it's not just the code of practice you've got to read and make yourself familiar with. You also need to ask for permission from the relevant authorities. This counts regardless of the place you film. For public locations such as streets, estates, commons, town halls, schools, shopping centres and leisure centre, you have to approach a Borough. Or rather the Boroughs film service, in order to process and log your request for filming. When however the place is private, such as The Royal Parks, Trafalgar Square, Parliament Square, The South Bank and the London Underground, you need permission to film in these locations, and actually they often require a fee to be paid.

Other organisations simply require the need to approach them and ask. Working out some form of contract or agreement. In terms of private location filming such as in a house, the Housing association or council, and all relevant parties, such as tenants, need to be contacted and asked, essentially.

Notice required to be given to the parties involved, include the size of the production, the type of the shoot, whether parking suspensions are required, and any other notable information deemed necessary.
Reference: http://filmlondon.org.uk/filming_in_london/code

Establishing shot definition

A shot that is generally the first of a new scene. It is designed to show the audience watching, exactly where the scene is taking place. Generally, it's a wide or extremely wide shot. More often than not, an establishing shot is conducted from the outside of a building. Or in scifi films, they're used to show the outside of a spaceship or planet.

Wide shot definition

Known as a wide shot, the individual or object takes up the majority of the frame height wise. Generally the feet of a person in a wide shot are nearing the bottom, and their head is nearing the top. They're used to show where something is located, such as in an establishing shot, but obviously on a closer scale. It allows the audience to see the immediate environment of the object/person.

Pan shot

A pan shot is one that involves rotating the camera along a horizontal plane. They can be used to show someone shaking their head from side to side. It's one of the most simple shots, and simply involves moving the camera in a sweeping motion.

Medium shot definition

A medium shot is one that moves even closer to the subject than a wide shot. It shows less of the setting around them and generally less of the subject too.

Close up
A close-up shot quite simply is a shot that tightly frames an individual or object, commonly used with medium shots and long shots as well. They display the most detail but not the broader scene.

Subliminal Cut
 This is where a cut consists of a few frames, appears on the screen so fast that they are normally registered subconsciously and not always consciously.

Flash Cutting
Editing the filmed shots so that they are incredibly short and thus the sequence itself is very short. Each scene or shot should be under two seconds long.

Match Cut
When you cut between two objects, spaces or compositions, where an object in the two shots match graphically. This shows a strong link between the two shots (metaphorically).

In-Camera Editing

This is a technique that's used to edit shots before they've even been compiled. What you do is shoot your shots in a sequence (an order). Therefore, before you develop your film, all the scenes are already in order! Therefore it's complete without editing software.

So what this means is that essentially you use just a simple camera or camcorder, maybe a tripod, and that's it. With some filming you've created your own video. In camera editing doesn't require any editing, solely because it is all done whilst still in the filming stages. All the filming is kept in sequence. That is to say that all the scenes are filmed in order, so no pc rearrangement is required. Also each scene is kept the length it's needed.

The problem of course with solely doing In-Camera Editing, however is that it leaves very little room for error. To put it into perspective, every recording must be absolutely perfect, or you've simply got to redo it. This can be incredibly frustrating, and time consuming. The editing being essentially within the Camera, means that the ability to trim the shot at a later date is impossible. As such timing is just as important as all the other factors that need to be taken into account. Neither too long nor too short, and it mustn't leave large gaps after each shot. Essentially you're filming without any sort of safety net. You can't just edit out something you don't like after.