Welcome to the site Ben. I have a similar set and I got this info from the Guru Mr Bracken (wrenneire) who has every set set known to man -- - Lima decided to enter the British OO market in 1973 because of the relative success of their N Gauge models.
Unfortunately the Lima equivalent of OO was HO and to this effect the Lima models were smaller than the available British OO. By 1977 they had stopped producing British HO and were producing OO instead. This was a trying time for Lima and to keep the market supplied with their HO products they took to producing British models by repainting and reliverying continental outline wagons coaches and locos. Needless to say they did not sell very well and by 1977 they had a completely new production of OO in proper British outline available.
The Irish HO range again include British outline models repainted into Irish liveries
Black 4F running number 628 & Flying Snail Logo Lima ref 1707, This loco came both individually boxed and as part of a set with 3 coaches.
Green Mk 1 Corridor Composite coach, Flying Snail Livery. Ref 2126T
8015 Cl 33 Orange & Black Colour, and again this loco came both individually boxed and as part of a set with 3 9144 Mk 2 coaches, "Supertrain Set"
Hope this is ok !