I'll be glad to help.
My answer will be based on personal experience rather.
It appears that your wounds have now been treated with the antibiotics, I hope the primary cause of this has been determined for you so the risk factors for developing future issues can be minimized - please ask me if you have further questions in this regard.
One ointment that I have had particular luck with is Calmoseptine, I'm not sure if it is available in the UK - but the ingredients are zinc oxide and menthol (picture attached). It is available over the counter.