Tugs_Gravesend -Ships in London

Looks a bit like the sun xxi second from the right mainly by what i can see of the name but the funnel colours are right . I might be wrong but had a model of her and it looks similar. Cant think of the company name but the whole fleet must be there nearly.

Their title was Sun Tugs Ltd.
Absorbed with other companies into London Tugs.
Stan

They are left to right. SunXXVI,XXI,XVII,XXV,XIX,XXII.

Picture of the Gravesend fleet would be 1963/68 with Sun`s XV, XX and possibly the new XXVII not shown.
A further twelve Sun tugs based upriver at Woolwich.
Cheers, John.