在
穷游看了很多关于
伦敦2FOR1的问答，可是始终没有搞清楚怎么样的火车票可以使用2FOR1的优惠。想请教一下大侠，如果我9月28日从
曼彻斯特坐火车到
伦敦，10月1日坐火车从
伦敦到
牛津，在9月月29-30日这段时间，我是否可以使用2FOR1的优惠呢？
我看了一下daysoutguide上面的问答，是这么说的：
What days will my train tickets be valid to claim the offers?
Single tickets - These are valid only on the day of validity. A days Travelcard must be purchased from a train station and feature the National Rail Logo.
Return Train Tickets - You will be able to use your return train tickets with the vouchers at any time between the outward and return journey - if you came on Thursday and returned on Sunday, you could use the vouchers on Thursday, Friday, Saturday& Sunday. In order to do this please ensure that you retain the outward portion of your ticket as you will need to show both tickets at the attraction - just ask the staff at the ticket barrier to let you through which they will be happy to do.
我的例子9.28及10.1的火车票都是单程的，但是我又是坐火车到达和离开
伦敦期间进行参观游览，是否能够获得2FOR1的优惠呢？
我看资料看了很久，但是实在没有找到答案。在
穷游高手如林中寻觅答案，请大家不吝赐教。感谢！
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單程票是不行的 官網如是說：
Single tickets - These are valid only on the day of validity. A days Travelcard must be purchased from a train station and feature the National Rail Logo.
但是 你可以買day travel card...隻要帶national railway 的標就行了。官网如是说：
If you buy your Travelcard from a National Rail station - such as London Victoria, St Pancras and Paddington - they will issue you with a paper ticket, which you can show and use at the attractions with the 2FOR1 offers, this will also allow you to travel between attractions, using the Underground.
reference 在这里： http://www.daysoutguide.co.uk/faq.aspx#1
你买的是这个票，优惠只有当天有效