There are a number of places, near and far, which offer time away for prayer and silence. Here are some which you may want to investigate!

The Society of Mary and Martha at Sheldon, Devon www.sheldon.uk.com

Theological College Ripon College, Cuddesdon, just outside of Oxford, set in beautiful rural countryside http://www.rcc.ac.uk/conference-facilities/retreats-and-sabbaticals 

St Columba’s House, Woking http://stcolumbashouse.org.uk/

For more information and ideas visit this Diocesan website article on retreats http://www.oxford.anglican.org/18669/

or visit The Retreat Association website http://www.retreats.org.uk/