Natural Photo Restoration And Colourisation

I have a single, black-and-white photograph that I want to turn into a gift. The goal is to restore the picture removing creases, dust and time-worn scratches—then colourise it so the result looks as though it was shot in full colour... (Budget: £10 - £20 GBP, Jobs: Adobe Photoshop, Color Grading, Illustration, Image Processing, Photo Editing, Photo Restoration, Photo Retouching, Photoshop, Photoshop Design)