So budget 450 punds.
Best samsung A series 2020 phone under that price is the A71 linked here however the screen is a stupid 6.7 inch, for me the 6.4 of the s10plus is just the limit, 6.7 out of discussion. If you want a smaller phone there are no downsized versions unfortunately.
Another option is the A51 since it has "just" a 6.5 inch screen and a lower price link here.
Small compact device with flaghsip specs the one and only s10e flaghsip camera, display, compact size, very compact actually and flaghsip soc, however the exynos battery life may be disappointing for you and i would advice you to import a snapdragon version, however there will be warranty limitations unfortunately... here.
If you want to go outside samsung devices i would recommend the SE2 only if you want an iphone, the soc is the A13 yes, it may be downclocked however and the hardware is the same of a 2017 iphone 8 so i would not advice you that device since apart from the soc the current midrange devices offer better screen, camera and features.
Another choice would be the oneplus 7 linked here however i do not know if in the uk you can go in a shop and buy one, in italy the only way is to buy online the oneplus devices so you may need go for e commerce if you want one. The screen size is 6.41 inch but it is a better deal if you compare it to an a71 or a51 from a performance point of wiew since you have the 855 which is currently faster than the 990 and 9820.
In sinthesis my advice is this:
Want to cap to your budget and do not care about a big phone go for the A71 if you want to keep into samsung system or take a oneplus 7 if you find one because the camera should be better than the A71 and the specs are much much better.
Do not want a big screen go for the s10e however the snapdragon version may be the recommended one.
I personally do not take into account xiamo or huawei devices especially at that price range, the quality level is better on samsung and oneplus but if you want a smaller device you may look something from those brands which i do not advise however.
Want an iphone go for the SE2, but go for it if you only want the apple logo, just that. On the rest which is not the brand that device is definitely NOT recommended.
That's it from me, i would point out one last thing: i do not know which is the renting society which is in charge of the samsung store, but in Italy it is a very bad one and buying from there means 100 per cent problems if you have an issue or even receiving another device instead of the one you ordered and not receiving a device swap with the one you ordered. So i would advice you to buy in a physical shop or trustable e commerce site.
Have a nice day!
