Hello everyone I'm new here and to the subaru life, don't know if anyone can help but I seem to be loosing water out of the top of the coolant bottle where a rubber pipe inserts in the top, does anyone have any suggestions on how to stop this apart from driving slower?

Wotcha and welcome - There is a max level on that bottle so I would first check without the engine running that the level is not too high. after that I would check for the radiator cap is ok as the seal lifting is what allows pressure and fluid to be released into that bottle. After that it may be you system is being over pressurised somehow - possibly head gasket failure?