That's rough, although coming from kitchen fitters, not unexpected. They've acquired something of a reputation here in recent years for shoddy electrical work.
The gas cooker's ignitor supply should be connected to the power supply either via a switched fused appliance unit or via an appropriately fused, accessible plug and socket. In Ireland it would be on a 20amp socket circuit protected by an RCD too. In the UK, I would assume it would normally be on a socket circuit too. Although, I'm not sure.
Pretty much the same here, either hardwired to an FCU or powered via a regular BS1363 socket & plug -- In either case accessible. No RCD required though.
