1^st London Division Engineers
1^st and 2^nd Field Companies

Expansion into two Divisional Engineer Groups

1^st / 1^st Field Company (509)

1^st / 2^nd Field Company (510)

2^nd / 1^st Field Company (512)

2^nd / 2^nd Field Company (513)

Reformed as 56^th ( 1^st London) Division RE

216 Field Company

217 Field Company

218 Field Company

219 Field Park Company

Re-designated as 56 Corps RE

Expanded and re-designated as 1^st London Corps Troops Engineers and 2^nd London

18 ( 1^st London) GHQ Troops Engineers

Reformed as 114 Army Engineer Regiment – RHQ Bethnal Green

216 Field Squadron

217 Field Squadron

218 Field Squadron

219 Field Squadron

216 Field Squadron

217 Field Squadron

B Company/London Yeomanry Territorials

Reconstituted as 217 Field Squadron RE(V), 65 Parkhurst Road, Holloway

217 Field Squadron RE (V)

Re-roled with change of title 217 Field Squadron RE (EOD) (V)

Formation of 101 (London) Engineer Regiment (EOD) (V)

with:

221 Field Squadron (EOD) (V) Holloway

222 Field Squadron (EOD) (V) Chelsea

223 HQ Squadron (EOD) (V) Catford

220 (Searchlight) Field Squadron (EOD) (V), Acton

220 (Searchlight) Field Squadron Relocated to TA Centre, Vicarage Lane, Heston

220 (Searchlight) Squadron (EOD) (V) Disbanded

Change of title to 101 (City of London) Engineer Regiment (EOD) (V) –

Bromley Road, Catford

221 Field Squadron (EOD) RE (V) – Bromley Road, Catford

217 Field Squadron (EOD) RE (V) – Gordon Road, Ilford

101 (City of London) Engineer Regiment Workshop REME – Gordon Road, Ilford

221 Field Squadron (EOD) RE – Bromley Road, Catford

217 Field Squadron (EOD) RE – Gordon Road, Ilford

2^nd London Division Engineers
3^rd London Field Company
4^th London Field Company

Expansion into 2 Divisional Air Corps 1/ 2^nd London – 47^th Division RE

1/ 3^rd Field Company (517) 1/ 4^th Field Company (518)

2/ 2^nd London – 60^th Division RE 2/ 3^rd Field Company (520) 2/ 4^th Field Company (519)

2^nd London Division RE (Chelsea) 220 Field Company 221 Field Company 222 Field Company 223 Field Company

Change of Divisional title to the London Division RE

Expanded and designated as 1^st London/ 56^th Division RE 220 Field Company 221 Field Company 501 Field Company 563 Field Company

2^nd London/ 47^th Division RE

222 Field Company
522 Field Company
503 Field Company
504 Field Park Company

101 Field Engineer Regiment (Chelsea)

220 Field Squadron
221 Field Squadron
222 Field Squadron
223 Field Squadron

Reduction in establishment and change in title to: 101 (London) Corps Engineer Regiment

222 Field Squadron

324 Field Squadron

Converted to infantry to form C Company 10^th Battalion The Queen's Regiment

Becomes B Company London Yeomanry

Resurrected as 217 Field Squadron (Holloway)

217 Field Squadron RE (V)

Re-roled with change of title to 217 Field Squadron (EOD) (V)

Formation of 101(London) Engineer Regiment (EOD) (V) (Catford)

221 Field Squadron (EOD) (V)

222 Field Squadron (EOD )(V)

223 Field Squadron (EOD) (V)

220 (Searchlight) Field Squadron (EOD) (V)

220 (Searchlight) Field Squadron Relocated to TA Centre Vicarage Lane, Heston

220 (Searchlight) Squadron (EOD) (V) Disbanded

Change of title to 101 (City of London) Engineer Regiment (EOD) (V) – Bromley Road,

Catford

221 Field Squadron (EOD) RE (V) – Bromley Road, Catford

217 Field Squadron (EOD) RE (V) – Gordon Road, Ilford

101 (City of London) Engineer Regiment Workshop REME – Gordon Road, Ilford

221 Field Squadron (EOD) RE (V) – Bromley Road, Catford

217 Field Squadron (EOD) RE (V) – Gordon Road, Ilford

Based at 46 Regency Street, Westminster, SW1. The London Electrical Engineers comprised of 6 Companies:

London (Fortress) Royal Engineers
1^st London Division Telegraph Company RE
2^nd London Division Telegraph Company RE
London Wireless Telegraph Company RE
London Cable Telegraph Company RE
London Balloon Telegraph Company RE

Reorganised to 5 Companies Designated:
London Electrical Engineers
London Wireless Telegraph Company RE
London Cable Telegraph Company RE
London Air-Line Telegraph Company RE
London Balloon Company RE

London Balloon Company RE – Disbanded

The Great War 1914 Mobilised and Deployed on coastal defence searchlight operations

London Electrical Engineers divided into two units and re-designated 10 th and 11 th

Anti Aircraft Battalions RE 1923 Re-designated 26^th and 27^th (London Electrical Engineers) Battalion RE

The 26^th Battalion came under the command of the 26^th (London) Anti-Aircraft Group also located at the Duke of York's HQ

The Establishment of the 26^th Battalion is increased to four anti-aircraft companies per

Battalion as 301/302, 303 and 321 301 Anti-Aircraft Company is relocated at the Shepherd's Bush Drill Hall, SW6 remaining part of the 26^th Battalion

26^th Battalion is mobilised as a unit of anti-aircraft command for the defence of London

Transferred from The Royal Fusiliers to The Royal Artillery. Re-designated as 26^th (London Electrical Engineers) Battalion RA

Woman Soldiers of the Auxiliary Territorial Service (ATS) are accepted for training with search light units

The 26^th Battalion became the first male/female ‘mixed' Regiment and are re-titled 26 th (Mixed) Searchlight Regiment (London Electrical Engineers)

With a much reduced threat of air attack all males under the age of 30 are transferred to the infantry

26^th (Mixed) Searchlight Regiment (London Electrical Engineers) placed in suspended animation

The unit was not reconstituted

Based with HQ at Mitchum House Streatham Drill Hall, SW1 with 304, 305 and 306

Anti-Aircraft Companies based at Rochester Row, Westminster

27^th Battalion placed under the command of 26^th (London) Anti-Aircraft Group

Increase in establishment to four anti-aircraft companies per Battalion as 304, 305, 306

and 339

27^th Battalion mobilised under Anti-Aircraft command for the Defence of London

Posted to Southampton on Anti-Aircraft Defence Operations

Became 27^th Searchlight Regiment RA on transfer of all Royal Engineer Searchlight Units

to the Royal Artillery

Left UK for Egypt. The only searchlight unit with Middle East forces with Batteries and sub

units serving in the Defence of Crete and Tobruk and the Air Defence of Alexandria and the

Battle of El Alamein

27^th Searchlight Regiment remained in the Middle East until the end of hostilities

Placed in suspended animation

Reformed as 562 Searchlight Regiment RA ( 27^th London Electrical Engineers)

Re-designated as a mixed light anti-aircraft/searchlight Regiment

Merged with 624 LAA Regiment (Royal Fusiliers) to become R Battery

624 LAA Regiment (Royal Fusiliers) convert to Infantry

131 Airborne Engineer Regiment (TA) formed at Knightsbridge as part of 16 Airborne

Division (TA). The Regiment consisted of 4 Squadrons, 299 Airborne Field Squadron, based

in Hull, 300 Airborne Field Squadron, based in Liverpool, 301 Airborne Field Squadron,

based in London (Croydon), 302 Airborne Field Park Squadron, based in London (Hendon)

16 Airborne Division reduced to a Brigade, becomes 44 Parachute Brigade. No change in

title or establishment to 131 Airborne Engineer Regiment

Re-titled 131 Parachute Engineer Regiment (TA) with a reduction in Establishment of

302 Parachute Engineer Park Squadron – Chelsea, Kingsbury

131 Parachute Engineer Regiment is reduced to a Squadron with change of title to

131 Parachute Squadron with HQ at Kingsbury, NW9, 299 Troop (Hull), 300 Troop

(Plymouth), 301 Troop (Birmingham)

131 Parachute Squadron is converted to the commando role in support of the 3^rd Royal

Marine Commando Brigade and renamed 131 Independent Commando Squadron RE (V)

with HQ & Support Troop (Kingsbury), 299 Troop (Hull), 300 Troop (Plymouth), 301 Troop

(Birmingham)

Cuurent title 131 Independent Commando Squadron RE

Originally formed as 135 Survey Engineer Regiment (TA) on 5^th October with 4 Squadrons: RHQ in Thame 337 Topographical Squadron at Chessington 338 Cartographic Squadron in Southampton 339 Lithographic Squadron in London

RHQ and 337 Squadron co-locate at Mercator House, Ewell

135 Survey Regiment (TA) is reduced to Squadron strength and re-titled 135 Survey Engineer Squadron (TA)

Squadron HQ
337 Troop
338 Troop
339 Troop

The squadron title is changed to 135 Independent Topographical Squadron RE (V) The change in title is accompanied by the formation of an additional troop to be known as 340 Supply and Distribution Troop

Change in title to 135 Independent Geographic Squadron RE (V) 2014 Current title 135 Geographic Squadron RE

Formed as 873 Movement Light Battery RA (TA) with Headquarters at the Drill Hall

Leacroft, Staines, Middlesex

Moved to hutted accommodation at Twickenham

Re-titled 873 Movement Light Squadron RE (TA) on transfer to the Royal Engineers under

command of 27 Engineer Brigade RE

Establishment reduced to a squadron HQ and one searchlight troop moved to the TA

Centre, Horn Lane, Acton

Change of title to 873 Movement Light Squadron (V)

Placed under command of 73 Engineer Regiment (V) becoming the only Searchlight unit in

the British Army

Transferred from 73 Engineer Regiment (V) to 101 (London) Engineer Regiment (EOD) (V)

rerolled with change of name to 220 (Searchlight) Field Squadron (EOD) RE (V)

Squadron moves to the TA Centre at Vicarage Lane Heston

220 (Searchlight) Field Squadron (EOD) RE (V) Disbanded