seal filler

Hi, We have a wall that is letting in some water around the outside of a window. Please see attached images of inside and outside. I believe it's the brickwork and/or render around the window on the outside. The timber lintel is exposed. We recently sealed the coping stones above and the chimney...

Disclaimer: I'm not good with DIY at all, but lockdown and situations have forced us to do some stuff ourselves that we would normally contract out for. "Should have paid someone" isn't particularly helpful so I'll save your time writing in saying "I know" in advance. We've recently tried to...