Mike Flint asked via email: Do you think it is adequate that James Crosby gives up three letters in front of his name as penance for his part in the downfall of HBOS?
David Cameron's response: This is his responsibility - and giving up his knighthood and some of his pension was the right decision.
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The study is expected to warn of the impacts of melting ice and permafrost.
Some northern and eastern areas may stay bright and warm but heavy rain or showers will affect most parts.
Police used tear gas and rubber rounds against protesters on Saturday