Is it easy to switch to bulb

Very easy.
Go to the home page, get an estimate and apply.to switch - takes about 21 days.
Bulb will email you to ask for initial readings, which will be passed on to your old supplier as their final readings, so there’s no overlap.
The process is similar to switching ISP - it’s ‘gainer led’ - so you don’t need to contact your old supplier.
If you have a DD set up with your present supplier, don’t cancel it until any credit/debit is settled with them. Their final bill can take up to 6 weeks to arrive.
Bulb will reimburse any exit fees incurred, up to £60 per fuel.

I moved via uswitch, put my details in and it all just happened, excellent communication from Bulb throughout.