Frowned upon using the LHR club lounge shower?

Hi
I have a 10:10am flight, but overall I will be travelling for roughly 26hrs from LHR to Colombia (dont ask). As I will be staying at a Premier Inn, I was thinking off skipping the shower here and using the shower in the CL instead.
Is it frowned upon people living in the UK to use their showers as they may want to reserve it for people that are having a layover via LHR?
Also, do the slippers have to remain or can you take them with you?....figured it would be handy for the flight.
Thoughts please.
Thanks
I have a 10:10am flight, but overall I will be travelling for roughly 26hrs from LHR to Colombia (dont ask). As I will be staying at a Premier Inn, I was thinking off skipping the shower here and using the shower in the CL instead.
Is it frowned upon people living in the UK to use their showers as they may want to reserve it for people that are having a layover via LHR?
Also, do the slippers have to remain or can you take them with you?....figured it would be handy for the flight.
Thoughts please.
Thanks