Xiaomi redmi A1 £79.99 at Argos has good reviews
Hi Mike yes its got good reviews and will be more than capable for your needs, plus putting photos on whatsapp, and yul probably be happy with it.
Now I will give you my honest thoughts Its only got 720 x 1600 pixel screen (non HD) more importantly the pixel density per inch is 269 whils’t not bad its not the best in my oppinion.
Your current Iphone SE screen is 1334×750-pixel resolution at 326 ppi whils’t being a retina display. the Xiomi redmi A1 what be as good as your current SE on screen resolution.
My honest advice is whils’t being a skinflit don’t be too much of one and dig in your pocket for another £70 withe the suggestion I made above with the Oppo A54 5g 2400 x 1080 405 pixels per inch screen will be more akin to the screen you enjoy on your Iphone SE. Your still getting a brand new phone at around the price you were looking at paying for a 7yr old used Iphone yesterday and a third of the price of a new mid range I phone.
I like to be as honest as I can Mike and have no intention of being rude lol.