I was surprised as there's only one First Class service each way at under £100 return, and others go up to £309 ... The times are pretty good too, 8.40 departure outwards and 15.44 departure for the return leg, so ideal for meeting for lunch.
The Hereford - Guildford Off-Peak Day Return at £38.50 Standard or £96.40 First Class is valid only on trains which go via Evesham. These are seldom the fastest option. That is why few are shown on the journey planners - it is assumed you prefer to travel by the fastest train. To reveal many more journey opportunities with these tickets, search for
Hereford - Guildford via Evesham.
If I was to buy a First Class Off Peak Day Return (TOCs LM & GW) would I be able to get a refund if I had to cancel?
As
ainsworth74 says, Off Peak Day Returns can be bought on the day. If you do buy the ticket in advance but then decide not to travel, there is a £10 admin fee but you get refunded the rest of the cost.
Here are details of the FGW
Weekend First upgrade.
I would normally recommend buying on the day, but there is a complication in this case. You planned trains are:
0840 Hereford - Great Malvern 0909 LM
0943 Great Malvern - Reading 1154 FGW
1204 Reading - Guildford 1247 FGW
1544 Guildford - Reading 1620 FGW
1654 Reading - Hereford 1945 FGW
There is no First Class accommodation on the LM train. You should have no difficulty buying a £15 Weekend First upgrade from Great Malvern to Guildford on the 0943 train shortly after it leaves Great Malvern. But note the sentence on the
Weekend First upgrade page:
You can buy in advance at ticket offices and on board High Speed services.
It has been reported in the
weekend first fgw thread that the Guildford - Reading service, which is not High Speed, does not sell Weekend First upgrade on board. So you may wish to book your ticket and upgrades a few days before travel, once you are certain the journey will take place.
Finally, one other thing may help you if you miss a train.
When issued in advance, Weekend First must include a free reserved seat. However, if the customer misses their reserved train, the supplement may be transferred to other services for the same journey on the same date at no extra charge, subject to accommodation being available.