Cost of electrical job/fix?

[user1489844432]

Hello

My light in bathroom is gone. It looks like it may be an issue with connection to the switch and cable may need to be replaced.
What should I expect to pay for this? I know it is difficult to say without seeing the job but I am after rough estimate. It will be difficult to get multiple tradesmen to quote in current circumstances so I want to make sure I wont get ripped off by first one who comes through the door.

I live in London.

Local firm charges £80 for callout and first hour's labour.

If its a simple fix £100. But its London which I believe can be expensive. Look on Facebook for recommended electricians.

I had an issue with a switch and another lightbulb. it was £80 to fix both (London).