At that price point, you really would be better off just getting a TM one at £10 more - https://www.defconairsoft.co.uk/product/tokyo-marui-sig-sauer-p226-railed-gbb-pistol/
WE P226 is about 90% of a clone of a TM, just some of the more irritating aspects like the blowback chamber are not compatible, so it basically renders it as a one and done pistol with very little in the way of available improvements.
The hop wheel on the WE needs replacing with the Maple Leaf one immediately as it doesn't get enough purchase to lift bb's well. Also being WE it's using WE Spec barrel and hop rubber, so not actually TM GBB spec despite appearances, so if you replace the hop rubber, you've got to replace the inner barrel at the same time.
WE spec hop rubber + WE spec barrel = OK
WE spec hop rubber + TM spec barrel = NO
TM spec hop rubber + WE spec barrel = NO
TM spec hop rubber + TM spec barrel = OK
It's not particularly gas efficient on green gas due the enormous amount of mass in the slide, WE guns in general are designed with Taiwan in mind, where red gas is the norm, even in 35+ degrees C.