Using phone data on staycations uk

[rsbarnes79]

does anyone who has recently been on the uk staycations know if we are close enough to land for the trip to use the usual phone data? I am with o2.

 

[DisneyBelle_x]

You’ll pick it up at times but won’t always work

 

[rsbarnes79]

Perfect, thank you. So if roaming is left on can this result in huge charges if it switches to roaming at sea?