Hello mcadam950 and Welcome to the forum.
Your masts are ;
Live results for North Lanarkshire, Scotland, ML6 7TN
Our network is currently working fine
If we're doing work on the phone masts near you we'll tell you about it here.
Updated 06:00 (refreshed hourly). Recent faults might not show yet.
Normal coverage for Voice, text and email (2G)
Making calls, sending texts, using email on your phone.
Good outdoors. OK indoors.
Normal coverage for Mobile internet and voice (3G)
Fast networking. For smartphones, dongles and tablets.
Patchy outdoors. Patchy indoors. Not good for mobile broadband.
Normal coverage for Mobile Internet (4G)
Seamless connectivity and mobile internet.
Sorry, we do not have coverage here.
From ->
http://status.o2.co.ukI would suggest checking the 'planned maintenance ' tab at the bottom too.
Help thread ->
http://community.o2.co.uk/t5/Pay-Monthly-and-Pay-Go/Self-help-guide-Is-the-network-down-for-me-or-ev...Try your SIM card in another phone.
If it's still the same ie no signal then a Sim Swap may be required.
Any O2 HighStreet Store can perform the swap in store (if on Contract please take some Photo I.D just incase), or a person can take the SIM card home or request one via O2 Customer Services. 202 for Contract. 4445 for PAYG. 8002 for Business ->
http://www.o2.co.uk/contactusSim Swap link ->
http://swapmysim.o2.co.uk Or text SWAP to 20220
Be sure to ask for an Account Specific Blank SIM card as Contract and Pay As You Go versions hold different information. And please take some Photo ID for Contract Sim Cards just incase your asked.
The Service will stop on the original SIM card which indicates the swap has started. Turning the phone Off and On , or if applicable switching airplane mode On and Off ,with the new SIM card in every 20 minutes or so will typically help the connection to settle.
If the sim swap makes little difference then download the MYNETWORK APP to report your masts. Ask people around you also on O2 to do the same if their experiencing the same.
If your a Contract Customer with home wifi then in the interim o2's Tugo App may be useful in the interim.
Tugo info ->
http://www.o2.co.uk/apps/tu-goIf your Payg then Whatsapp , Viber and calling through Facebook etc may be helpful if the other parties have these on their phones too.