You need to speak to a live chat agent who should be able to provide you with a working link.

https://idmobile.co.uk/live-chat

More info about the offer can be read below:

https://www.idmobile.co.uk/apple-subscriptions

Hi @Pixel-Pixie,

Welcome to the Community!

It looks like @WelshPaul has answered your query.

If you require further assistance, please let us know.

Kash

I spoke to Live chat over a month ago now and they said they would get the relevant department to contact me. Needless to say no-one has. I have to say you have the worst customer service I have ever encountered.  I signed up to id-mobile at the beginning of the year and still no promised Apple TV for 3 month period 

Hi @Pixel-Pixie,

Welcome to the Community!

If you still require assistance we can PM you here.

Please let us know and we can assist you further.

Kash