Even if you do not have a warranty over goods which you have purchased, you still have statutory rights under the Consumer Rights Act 2015 (CRA 2015).
If goods bought from a retailer aren’t of satisfactory quality, fit for purpose and as described, you have the right to return them and get a full refund within 30 days of purchase.
Within six months of purchase, it’s up to the retailer to prove that you caused the problem with the goods: if they can’t, they’ll have to repair or replace the goods or give you a refund if that’s not possible.
After this initial six-month period, you will have to prove that any faults are not down to misuse of the product or general wear and tear. This might require you to obtain an expert report, opinion or evidence of similar problems across the product range. Factors such as the price, the specification/model of the goods, the length of time you’ve had the goods and the length of time which they should last will all be considerations.
If all else fails, you have six years from when you bought the faulty goods to take a claim to the small claims court and reclaim the cost of repair of the product.