Only been once myself, during a brief warm period a few weeks ago. Only one perch, but some home-made (or should that be bankside-made) minestrone soup cheered me up 
John S
Quanti Canicula Ille In Fenestra
Species caught in 2017 Common Ash, Hawthorn, Hazel, Scots Pine, White Willow.
Species caught in 2016: Alder, Blackthorn, Common Ash, Crab Apple, Left Earlobe, Pedunculate Oak, Rock Whitebeam, Scots Pine, Smooth-leaved Elm, Swan, Wayfaring tree.
Species caught in 2015: Ash, Bird Cherry, Black-Headed Gull, Common Hazel, Common Whitebeam, Elder, Field Maple, Gorse, Puma, Sessile Oak, White Willow.
Species caught in 2014: Big Angry Man's Ear, Blackthorn, Common Ash, Common Whitebeam, Downy Birch, European Beech, European Holly, Hawthorn, Hazel, Scots Pine, Wych Elm.
Species caught in 2013: Beech, Elder, Hawthorn, Oak, Right Earlobe, Scots Pine.
Species caught in 2012: Ash, Aspen, Beech, Big Nasty Stinging Nettle, Birch, Copper Beech, Grey Willow, Holly, Hazel, Oak, Wasp Nest (that was a really bad day), White Poplar.
Species caught in 2011: Blackthorn, Crab Apple, Elder, Fir, Hawthorn, Horse Chestnut, Oak, Passing Dog, Rowan, Sycamore, Willow.
Species caught in 2010: Ash, Beech, Birch, Elder, Elm, Gorse, Mullberry, Oak, Poplar, Rowan, Sloe, Willow, Yew.