There are not many Interactive buildings that take woodchips or lumber but one exception is Hyde Pulp Mill,<kuid:316:27007> which takes woodchips and produces general goods.
Two industries that take a lot of commodities are:
Seaport and Seaport Basic but these are probably too large to put on the British Midland map.
Other possibilities are the built-in industry tracks:
Multiple Industry
Multiple Industry basic
or ones such as:
BI Bulk,<kuid2:30671:27207:2>
BI2 Wood,<kuid2:30671:27231:1>
PL PaperMill,<kuid2:30671:27393:1>
PL Woodchips,<kuid2:30671:27383:1>
PL WoodProducts,<kuid2:30671:27384:1>
BI2 Furniture,<kuid2:439337:100006:2>
there is a very large range of these which cover many commodities.
There is also a number where you set up the consumed and produced products by editing there properties in surveyor, these include:
Multiple Industry New
and the ones beginning:
Multi Ind str... which come in a number of sizes.
With all of these you need to put a suitable building at the side of the track.
One other possibility is to send the train to a portal from which it is set up to return via the same or a different portal and to load/unload as you want.
A final possibility is to use the unload command InstantUnload,<kuid2:67585:1021:2>
which will unload all wagons in the train when the driver is given the command.