TA - 222 Field Squadron RE
222 Field Squadron RE was part of 101st (London) Enginneer Regiment. The Regimental HQ and two of its four squadrons, 222 Fd Sqn and 223 Fd Park Sqn, were based in the glorious settings of The Duke of York's Headquarters in Kings Road, Chelsea, London SW3. Another squadron, 220 Fd Sqn was at Heston, and the other, 221 Fd Sqn, at Peckham.
There is an excellent website run by Peter Cox which can be found here - http://chelseasappers.co.uk which will allow you to catch up with each other there.