On Monday, 5 September 2016 17:12:10 UTC+1, Bill wrote:
Is it likely that he would have to get all the doors right before it was
rentable?

Any property is rentable in any condition, but the quality will affect the rent achieved and the calibre of tenant. Although a good well maintained property is not a guarantee the tenant will respect it, if the tenant thinks the landlord doesn't care then the tenant is unlikely too either.

What do these inclusive estate agent deals involve? If a tenant is
installed and a light bulb needs replacing, is the agent likely to call
in a contractor at great expense?

In many cases yes. You should replace all fancy lights with standard BC battens and pendants. Paper ball lampshades can be had from B&Q for £1 to pretty them up.

Owain