I think the first city is the City of London, so 'adjacent city' could be City of Westminster, with the bridge being Westminster Bridge. The compiler usually does a strange 'dream' sort of puzzle for Christmas !
Many thanks for your prompt reply. I think 1st city is London. However, Newcastle upon tyne had 1st street lighting but not in 1858! So, I'm a bit confused here!
Hi. Don't think it can be Newcastle as it's not 'adjacent' to the City of London. Westminster is, technically speaking, the City of Westminster, so fits. A bit of Googling on Westminster Bridge might be fruitful......