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(11)

EP 3 359 739 A1

(12)

(43) Date of publication: 15.08.2018 Bulletin 2018/33 (21) Application number: 16777738.2 (22) Date of filing: 14.09.2016

(51) International Patent Classification (IPC):  E01F 9/20(2016.01) E01F 9/615(2016.01) E01F 13/02(2006.01) (86) International application number: PCT/GB2016/052840 (87) International publication number: WO 2017/060670 (13.04.2017 Gazette 2017/15)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (30) Priority: 07.10.2015 GB 201517736 (71) Applicant: JSP Limited Oxfordshire OX29 0TA (GB)	(72) Inventors: SANDERS, Stephen Minster Lovell Witney Oxfordshire OX29 0TA (GB) WILLIAMS, Mark Minster Lovell Oxford Oxfordshire OX8 5RX (GB) JOHNSTONE, Clive Minster Lovell Witney Oxfordshire OX29 0TA (GB) (74) Representative: Wynne-Jones IP Limited  Essex Place 22 Rodney Road Cheltenham Gloucestershire GL50 1JJ Gloucestershire GL50 1JJ (GB)