Short of someone here offering deals, check out Martin Lewis' Money
Saving Expert websiteI'm currently looking for the same thing. Far too
expensive for what I use.
I log in and it says:My upgrade options RECOMMENDED19 days until you can
upgrade on usYou‘ll be able to take up this tariff‘s exclusive offer on
12 March 2019.When you upgrade, you'll need to trade in your old device
and choose an O2 Refresh tariff.-...
Exactly the same, I've been on a higher tariff than I need with the S9+
but bit the bullet for the yearly upgrade. Now I'm thinking about the
S10 and........?!? Please do keep us posted on what they say to you
tomorrow, good luck!