octavia mk1 1.8t remap

Hello,
I am new to the forum and skoda.

I have an early Octavia 1.8t and want to remap. It's not giving the return on fuel I expected for a 150bhp motor. But maybe my right foot is too heavy.
I am averaging around 26mpg according to the trip computer.
Not looking for a massive bhp increase but would like as much torque as possible and more economy if possible.
Can anyone recommend the best place for a live map or remap around Bristol please.
There is quantum tuning advertising locally, but I know nothing of them.

Only folk I know to be good around here around fc performance, but they specialize in Italian motors and wasn't sure what he could do on a 1.8t.

Any suggestions of companies folk have used locally and found to be good would be appreciated.
Many thanks.