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Name:Grimsbury Castle
Hill number:18492
Height:158m / 518ft
Parent (Ma):2906  Walbury Hill
RHB Section:39: Central and Eastern England
County/UA:West Berkshire (CoU)
Catchment:Thames
Class:Tump (100-199m)
(Tu,1)
Grid ref:SU510722 (est)
Drop:39m
Col:119m  SU514733  
OS map sheet(s):(1:50k) 174
(1:25k) 158
Comments:Relocated from SU506714 February 2014. Another 158m spot height at SU506716 on 1:50k map.
Change log:show changes for this hill entry
GPS data:show GPS entries for this hill

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N.B. Some hill summits are on private property or on land where there is no public right of way.  Permission should be sought from the landowner where access to a hill summit is through private land.
Please report via the contact page any logs you see below which describe or encourage acts of trespass.  Please quote the hill number and hill name.

Logged Descriptions  (logged by 34 users)ByDate of Ascent
1st of 4 hills on a traverse from Hermitage to Wickham Heath and the last trip for a while due to the Coronavirus pandemic! Train to London St. Pancras, tube to Paddington, train to Newbury and bus to Hermitage. Explored the interesting ancient ramparts in the beech woodland (preferred top) then continued via 158m spot near road, visiting trig en-route then continuing to Snelsmore East Common...Dazingdale21/03/2020
10 degrees, sunny spells, stiff westerly breeze.Wycombe Wanderer24/12/2019
As per others, parked at the info board by the unusual Grimsbury Castle house and then walked around the iron age fort. No clear high point, but very pleasant woods. Some very polite local teenaged were doing spectacular BMX jumps over the ramparts. Oddly, later on at a craft beer shop in Newbury I saw and (and obviously bought) a beer called Grimsbury Castle made by the local Hermitage brewery - I'm a bit of a sucker for beers named after hills.wheresthepath28/07/2019
HP is probably on beech covered ancient earth bank but hard to say. Lovely beech woodland with blue bells. Trig visited too. Free parking at road junction. Public access.Denise 27/04/2019
Superb Beech woods. A wander around the earthworks, high point on W side of the road then through woods past grove of Redwoods to trig pillar.RichardM27/04/2019
From small car park at junction to NE then up through woodsMark Sims27/03/2019
as for Dugswell2arranc25/08/2018
As others from parking next to information board.Campbell Singer29/03/2018
Very pleasant.ijpowell07/09/2017
'Climbed' on our '25 Trig Points in a Day' half term challenge.DanMaisieBex17/02/2017
Short walk from interpretation board.Bramley30/11/2016
Quick walk up from our house & did the trig point as well ( which is to the S )DanMaisieBex26/11/2016
Parked near interesting cottage for a short amble into the wood.Dugswell203/11/2016
Boxford to Hermitage.Smudge28/10/2016
An unusual quirky summit cottage in the woods next to this pleasant woodland. Just along from Downe House girls school where Kate Middleton went to school age 12 from her prep school but left (for co-ed Marlborough) after 2 terms due to allegedly being teased / bullied.Chris Pearson25/05/2016
Parked by the interpretation board and wandered into the woods. Fairly pleasant spot I suppose.Herbert Anchovy16/05/2016
Easy access from parking area.rhalstead13/03/2016
Iron Age hill fort rampart to west of road with tree seems to be high point.ngthack29/08/2015
Nice spot: meant to be the last hill of the day before driving home N, but found navigating off the A34 rather complicated, so visited this first of the three N of NewburyGordonAdshead16/08/2015
Couple of possible HPs. Earth bank to west of road with tree at top may be it.PeterD04/07/2015
Nothing positive to say, except can park in entrance to reservoir near the topHillsidenick28/07/2013
Visited to bag the trig pillar. Nothing much to see here, top not obvious.jonglew01/06/2013
walk all around the area to be sure.Adrian03/03/2011
RHW19/03/2005
arjh17/02/2020
DC11main18/09/2017
andrew brown21/09/2016
RocksRock14/05/2016
Swindon Bagger20/06/2015
BrianMatthews13/01/2015
stevent080901/01/2014
Jacqdaw28/07/2013
griefmiester02/02/2010
Trantham Clan01/07/1998