I buy the Platform 5 Combo each year (and before that the IA ones), but also have a spreadsheet of the numbers I "need". Instead of "red penning", I shade the relevant cell. When the new book arrives, I print off the current sheet, and put it in the outgoing book, then delete all the shaded cells to start the year afresh (adding any new numbers that irritatingly appear).
My daughter, who has no interest in railways, has asked to be left the full collection of combos in my will, as they sum me up for her.
My daughter, who has no interest in railways, has asked to be left the full collection of combos in my will, as they sum me up for her.