Tap problem or boiler problem?

[blr]

I have a worcester 28i junior boiler which started to drop the pressure recently for around 0.5 bar within a week. Also the kitchen hot water tap also drips now. The water gets very hot in a few minutes.
I am wondering whether the boiler pressure lost links to a fault water tap?
thank you

 

[lame plumber]

unlikely linked but a problem may be starting with boiler that can be resolved fairly easily if looked at soon