TC13 (Out) @ YYYY (GS 3925)
TC14 (In) @ last plot

These, very relevant, albeit unpunctuated abbreviations, have themselves been abbreviated in most cases.

CMFBMJ?MCBLMMCBHMCPGSCHFIMKNC?MENJBEJCH

Route Checks:
1) List in order, the GSs visited where the route crosses the River Isle
2) List in order, the GSs visited where the route crosses the River Parrett
3) List in order, the GSs visited which contain a Telephone
4) List in order, the GSs visited which contain a Post Office
5) List in order, the GSs visited which contain a Public House
6) GS containing the most Southerly point visited
7) GS containing the most Westerly point visited
8) GS where the route first joins a white road
9) Number of times the route joins or crosses an Orange Road
10) Total GLs crossed on a white road

The abbreviations were very relevant because they were the initials (full or partial) of competitors in the Summer Internet TT. When you substituted their initials with their competition number, you ended up with a list of spot heights to visit. ? referred to 13 as there was no competitor with this number. The list decoded as follows:

Carol Moulton (23) mark Fearon (26) brian Banks (9) Mark fearon (26) Jeremy rodgers (29) ? (13) Mike biss (14) Catherine doherty (22) Bridget Lewis (15) Marc cattle (31) carol Moulton (23) Carol moulton (23) Brian johnson (19) neil Howson (39) carol Moulton (23) Catherine woodman (27) Peter George (25) phil Smith (37) Colin Hensman (45) chris Faul (32) Ian james (17) Mark fearon (26) Keith Norman (12) Catherine doherty (22) ? (13) ted Manktelow (11) john Evans (8) keith Norman (12) John evans (8) Brian banks (9) john Evans (8) brian Johnson (19) Colin Hensman (45)

Carol Moulton should have got this one! I thought the route card was easyish!, so the route checks were purposely a bit tricky.

Route Check Answers
1) 3922,3621,3717
2) 4222
3) 3718,3818,4318,4220,4224 or 4324,4621
4) 3921,3620,3522,3520,3517,4017,4320
5) 3921,3820,3522,3818,4017,4319,4320,4319,4220
6) 4116
7) 3420
8) 4316
9) 4
10) 8