Leaking toilet overflow pipe / handyman

[claresy]

My toilet overflow pipe is dripping almost constantly. I've Googled it and tried various things to no avail although it's apparently simple to fix! Can anyone advise me? I don't want to pay call out charges for a plumber when I imagine someone more practical than me could solve it easily.

I'm also looking for a handyman longer term. I had an excellent person but he has now taken on a permanent job so am looking for someone (working alone) who is reliable and good value and can fix jobs around the house such as this, sometimes at short notice.

Thank you.