Michael Foster, chairman of trustees for COPS (Care Of Police Survivors) said the memorial was a way for people who have lost family in the police force "to come together and reflect and remember their loved ones who are no longer with us".
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It will be very mild, with early cloud lifting and breaking to allow warm sunny spells by late morning.
Rather breezy, but dry and unseasonably warm, with early cloud soon breaking to give some good sunny spells.
Mild and cloudy outlook.