I have just managed to save a load of money on Amazon I spent just over £170 on already discounted things for just £140. It did involve a bit of planning and effort, but if anyone else has a lot to buy from Amazon, here's how I did it...
Firstly, if you have any old Amazon accounts (that you may have used in the past to get free Prime trials, for example) CHECK YOUR EMAIL because Amazon have been sending out unique codes for £10 off eligible spends of £50 and over. Eligible seems to mean anything dispatched by Amazon and works on Black Friday reductions like the Prime TV stick.
£5 credit when you top up £20 in store with PayPoint. This link should take you to the right page if you are already logged into Amazon. It's really easy to do and the £5 credit is applied to the next thing you buy that is dispatched by Amazon. The promotion only works once per account, and the credit will expire after 31 Dec if not used. I have 2 Amazon accounts so used this twice, once for each account.
£5 credit when you top up £50 online. This link should tell you if your account is eligible. Like the other offer, it's will only work once for each account (so, again, I topped up both accounts). Unlike the other offer, the £5 credit from this can be spent on anything and lasts for up to 10 years, like a gift card.
It did take quite a bit of planning, but it was a good saving for things I was going to buy anyway, especially since it included some things that were already very reduced.