(19)

(11)

EP 3 752 677 A1

(12)

(43) Date of publication: 23.12.2020 Bulletin 2020/52 (21) Application number: 19705811.8 (22) Date of filing: 11.02.2019

(51) International Patent Classification (IPC):  E02D 1/02(2006.01) E02D 3/12(2006.01) E02D 5/36(2006.01) (86) International application number: PCT/GB2019/050354 (87) International publication number: WO 2019/158907 (22.08.2019 Gazette 2019/34)

(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: KH MA MD TN (30) Priority: 14.02.2018 GB 201802437 (71) Applicant: KELTBRAY LIMITED Esher, Surrey KT10 9TA (GB)	(72) Inventors: PELKEN, Michael Esher, Surrey KT10 9TA (GB) NORMAN, Stuart Esher, Surrey KT10 9TA (GB) MULHOLLAND, Andrew Esher, Surrey KT10 9TA (GB) WALTERS, Jack Esher, Surrey KT10 9TA (GB) (74) Representative: Abel & Imray  Westpoint Building James Street West Bath BA1 2DA Bath BA1 2DA (GB)