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The Guardian - UK
The Guardian - UK
National

Sewage treatment in theory and practice

Anglian Water sewage treatment works
Anglian Water sewage treatment works. Photograph: Graham Turner for the Guardian

My brothers went to Oxbridge (Letters, 28 August). I went to Woolwich Poly. I designed sewage treatment works. They could only write about them. The point is we need both, and both should be valued.
Brian Keegan
Peterborough

• Insightful comments from Simon Jenkins (Labour has outstanding leaders…, 27 August). Shame on him for omitting Joe Anderson, the formidable elected mayor for Liverpool.
Françoise Murray
Liverpool

• Christopher Nash (Letters, 28 August) suggests that Shoreham airport is close to the Swanwick air traffic control centre. I make them about 50 miles apart.
Andrew MacGregor
Isle of Colonsay

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