Two World War Two Lancasters have flown together for the first time in 50 years.
The Battle of Britain Memorial Flight's aircraft has been joined by the only other airworthy example, which has crossed the Atlantic to Lincolnshire.
The pair was due to pass over Lincoln cathedral last Friday but the flight was postponed due to bad weather.
A series of practice flights near RAF Coningsby will now be performed ahead of a month of events across the UK.
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