People tend to check in during these times:
Every little helps
I don't all the complaints about signal. I use GiffGaff and I don't get any issues
Holidaying from Scotland? Change your bank notes to English ones so you don't hold up the queue while the staff check if they are allowed to accept your cash!!!
if your any network u will not get a signal inside the shop at all
If your vodafone you wont get a signal here