Part of the SideTracked series of caches.
Abbey Wood (Elizabeth Line) railway station finally opened on 24th May 2022 only 4 years late!
The typical off-peak service in trains per hour is:
2 tph to Heathrow Terminal 4
2 tph to Heathrow Terminal 5
4 tph to Maidenhead of which 2 continue to Reading
The Elizabeth line did not not initially run on Sundays, but a Sunday service was introduced on 6 November 2022.

You are the owner of a "Reverse-Geocache-Box", which will tell you the distance to the final cache, but not the direction. All the instructions and information you need to complete this wherigo are contained within the cartridge.
The cartridge for the wherigo was developed by -Waldmeister- with GC357G1 being the first and since has been re-used with the kind permission of the developer.
The cartridge can be to download HERE
You will require three six digit numbers to activate the cartridge.
You should be standing next to the steps at the lower level entrance for the Elizabeth Line. To your left are a couple of signs. A little blue one A/BCD and a bigger one £EFGH
9GBE28
2CAEA8
GDA8FH
The checksum of all numbers is 55. You are looking for a 1.5ml magnetic container.
About SideTracked Caches
This cache belongs to the SideTracked series. It is not designed to take you to a magical place with a breath taking view. It's a distraction for the weary traveller, but anyone else can go and find it too. SideTracked caches have become a nationwide series of caches for public transport users. They are intended to provide quick cache-and-dashes at or nearby railway stations. Caches can be found close to stations of the national rail network and well as heritage railways. More Information can be found at the SideTracked Website