I'm going to be travelling from Edinburgh (EDB) to Kings Cross (KGX) on LNER and then from London Bridge (LBG) to Sevenoaks (SEV) on Southeastern. This will involve a jaunt across the river with the tube. When I booked the ticket on the LNER website I'm pretty sure it said that the transfers were included, but looking at my email receipt there is no mention about it.
Apologies if I'm being a bit thick, but as I understand from the National Rail, I think this symbol on my ticket (see attached photo) means that I can use the ticket on the tube? As a side note, while the website says "cross" it seems to more resemble the insignia of German Air Force.
Many thanks in advance.
www.nationalrail.co.uk
Apologies if I'm being a bit thick, but as I understand from the National Rail, I think this symbol on my ticket (see attached photo) means that I can use the ticket on the tube? As a side note, while the website says "cross" it seems to more resemble the insignia of German Air Force.

Many thanks in advance.
Travelling in London | National Rail
Whether you’re travelling to, from, or in and around London by train, we can help you find the best routes and prices for your journey.
If your journey involves travelling via or across London to connect with another National Rail service, your ticket should include the cost of transfer on London Underground, DLR, Thameslink or Elizabeth line services between the relevant stations.
Your ticket will be marked with a cross ( + ) sign.