I moved in 25th January

I moved in this property and at that time meter reading was 88143 for electricity and 11338 for gas.
Bulb will send to me 1st bill, is it started from the day when I arrived?

Which company was/is supplying the property on the day you moved in?

It is “First Utility”
And the photos I took 25th January when I moved in are below

https://photos.app.goo.gl/f4QJJktthXTCaFJ88

You need to contact First Utility and arrange to pay them for the energy used since you moved in.

Once that is done, you can start your switch to Bulb. Have you already started the switch to Bulb? If so, I guess First Utility will likely block the switch due to the debt built up so far from 25th January.