You are correct, the receipt is more important than the warranty card.
Not exactly.
What's most important is
"proof of purchase" - that doesn't necessarily have to be a receipt.
Subtle difference, but a credit card statement / bank statement etc showing the date that funds left your account is also
legally acceptable.
Of course, in practice this won't actually itemise what you purchased so you may encounter some resistance - but most major companies will accept it as proof.
The one thing you will have to remember is your warranty lies with the supplier be it Jessops,
Park Cameras or Kerso. If anything goes pear shape they should be the first port of call.
Yes and No.
There are actually 3 layers of protection to think about.
Under contract law you are protected by the Sale of Goods Act in the UK. This is a contract with the
retailer and you actually have 6 years (or a reasonable lifetime for the product if this is less than 6 yrs) to make your claim.
However, this is a UK law so will not cover you for purchases abroad.
Many retailers also offer a 30 day, no quibble money back guarantee. However, they are not legally obliged to do this. In fact, unless goods are faulty they do not have to offer you a refund at all in these 30 days.
Finally, there's the manufacturer's warranty. The details will be stated clearly with any item you buy and may be for any period of time that the manufacturer chooses and this is the "warranty card" that you'll get with many purchases.
This warranty is with the
manufacturer
For UK purchases which prove to be faulty after the retailer's 30 day (or whatever) guarantee, you have 2 choices. Exercise your right under The Sale of Goods Act to deal with the retailer or return the item to the manufacturer under their warranty.
For overseas purchases your only course of action is to deal with the manufacturer, because the Sale of Goods Act is UK legislation (although your statutory rights under the SoGA may be slightly more complex if you purchased from a multi-national retailer with a UK trading arm - it's a bit of a grey area)