Had a little difficulty tracing the Spicers at first-
Leslie Hardy Spicer appears in the 1911 census with his mother, Jane Edwina Mary Hardy Spicer, but no father is present; I found the 1894 marriage to a William Spicer, but this didn't really prove useful as it lacked other details. However, a bit of poking around online led to this Rootschat thread-
https://www.rootschat.com/forum/index.php?topic=792997.0 - which provided many helpful leads. I looked up the probate record for the William Spicer mentioned in that thread- a founder of Whitley Bay- and his wife was indeed mentioned to be Jane Edwina Mary Hardy Spicer.
Per that thread, with other details I've put together:
Leslie Hardy Spicer (1903-1981) of Shore Close, Milford-on-Sea, Lymington, Hants., formerly of Compton House, Farnham, Surrey, Brig. (he seems to have served with the East Yorkshire Regiment, per the London Gazette) m. 1940, (Muriel) Winifred Alice (1914-2003), dau. of - Carter.
L. H. Spicer was second son of William Spicer (1844-1925), of Lyndhurst, Whitley Bay, Northumberland, a banker with York City and County Banking Co., Newcastle, formerly of Dale, Young, Nelson & Co., Maj., Tynemouth Royal Garrison Artillery, a county councillor and J.P., and his 2nd wife (m. 1894), Jane Edwina Mary Hardy (1866-; 'Hardy' was apparently one of her middle names and her surname), dau. of Edward Hardy, of Chester le Street, Durham.
William Spicer was son of William Spicer (1814-1887), of Gilling, Yorks. (at the time of his death, of 11, Mount Pleasant Cottages, Walthamstow, Essex, formerly of Higham Hill, Walthamstow) and his first wife (m. 1834) Dinah, dau. of - Atkinson (her name appears in the 1851 census, as does a daughter, as 'Diana', but this is not corroborated by the children's birth records or her marriage record so can presumably be discounted). William Spicer (senior) was a coal and insurance agent, formerly a journeyman carpenter; when he married 2nd, in 1877, Susannah (1837-), dau. of William George Smith, gardener, he became a grocer and postmaster at Walthamstow. His second marriage record gives his father as Joseph Spicer, and per the Rootschat thread he was a publican; I couldn't find the birth record of William (senior), but census records indicate him to have been born at Gilling.