The UK has four licenced network operators: EE, Telefonica UK (O2), Three and Vodafone providing services using a variety of mobile technologies.
There are a number of other companies that provide mobile network services such as Tesco, giffgaff and Virgin. These are known as MVNO (mobile virtual network operators) which lease network capability from one of the four licenced operators.
These are all listed below so you can determine which of the four network operators provides service.
EE 
O2 
Three 
Vodafone 
ASDA 
giffgaff 
Shebang 
Sainsburys 
EE 
O2 
Three 
Talkmobile 
Orange 
Tesco Mobile 

Vodafone 
Virgin Mobile 
TMobile 
100MB of data a month gives you roughly 3MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 4 webpages
• read 20 emails
• share 5 photos
10GB of data a month gives you roughly 330MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 100 webpages
• read 100 emails
• share 150 photos on facebook
• watch 90 minutes of video
13GB of data a month gives you roughly 430MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 100 webpages
• read 100 emails
• share 250 photos on facebook
• watch 120 minutes of video
150MB of data a month gives you roughly 5MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 6 webpages
• read 30 emails
• share 10 photos
1GB of data a month gives you roughly 30MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 20 webpages
• read 50 emails
• share 50 photos on facebook
• watch 5 minutes of video
2.5GB of data a month gives you roughly 85MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 20 webpages
• read 50 emails
• share 150 photos on facebook
• watch 15 minutes of video
200MB of data a month gives you roughly 6MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 8 webpages
• read 30 emails
• share 15 photos
20GB of data a month gives you roughly 650MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 100 webpages
• read 100 emails
• share 500 photos on facebook
• watch 180 minutes of video
250MB of data a month gives you roughly 8MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 10 webpages
• read 30 emails
• share 20 photos
2GB of data a month gives you roughly 65MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 20 webpages
• read 50 emails
• share 100 photos on facebook
• watch 12 minutes of video
300MB of data a month gives you roughly 10MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 12 webpages
• read 40 emails
• share 25 photos
350MB of data a month gives you roughly 12MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 14 webpages
• read 50 emails
• share 25 photos
3GB of data a month gives you roughly 100MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 20 webpages
• read 100 emails
• share 150 photos on facebook
• watch 20 minutes of video
4GB of data a month gives you roughly 130MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 20 webpages
• read 100 emails
• share 150 photos on facebook
• watch 30 minutes of video
500MB of data a month gives you roughly 16MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 20 webpages
• read 50 emails
• share 30 photos on facebook
• watch 1 minute of video
50GB of data a month gives you roughly 1600MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 1500 webpages
• read 500 emails
• share 4000 photos on facebook
• watch 180 minutes of video
50MB of data a month gives you roughly 2MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 2 webpages
• read 10 emails
• share 0 photos
5GB of data a month gives you roughly 160MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 30 webpages
• read 100 emails
• share 150 photos on facebook
• watch 40 minutes of video
600MB of data a month gives you roughly 20MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 20 webpages
• read 50 emails
• share 30 photos on facebook
• watch 2 minutes of video
6GB of data a month gives you roughly 200MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 30 webpages
• read 100 emails
• share 150 photos on facebook
• watch 50 minutes of video
750MB of data a month gives you roughly 25MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 20 webpages
• read 50 emails
• share 50 photos on facebook
• watch 2 minutes of video
7GB of data a month gives you roughly 230MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 30 webpages
• read 100 emails
• share 150 photos on facebook
• watch 60 minutes of video
8GB of data a month gives you roughly 260MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 50 webpages
• read 100 emails
• share 150 photos on facebook
• watch 60 minutes of video
Unlimited of data a month gives you roughly 99999MB each day.
To give you an appreciation of what that actually means, you could do all the following each day:
• visit 99999 webpages
• read 99999 emails
• share 99999 photos on facebook
• watch 99999 minutes of video