Could you help me identify the model

[SMARTIT]

Hi.  Just found a picture of my Grandad and Nana astride what I believe to be a Douglas bike.  Could anyone help me identify the model and where I might be able to see one in the UK.

Many thanks in advance.

[LENBOY]

The machine is a 1922/23 Douglas 2 3/4 HP (348cc) Model T S, 2 speed gearbox without clutch or kickstart. Registration NO 7618 was issued by Essex County Council at Chelmsford, Essex on 18th January 1923 to C.A.Wright of 54 High Street, Chelmsford. I hope this is of some help with this great period photo, I will add a copy of it to the club photo archive.