If you are a member of the Flemish Rock Garden Club - VRV Vlaamse Rotsplanten Vereniging - you may still be able to book a place on their trip to the AGS Harlow Show :
https://www.vrvforum.be/?p=5387 As they say : "As already mentioned in our magazine, the VRV will again step out in 2019. After the success of the Netherlands trip in 2017 it was not easy to find another destination as worthy successor. In the end we believe that we have succeeded ... We want to take you to the "Walhalla" for rock plant enthusiasts, because this time we are going to the Alpine Garden Society "Early Spring Show" in Harlow (UK) on March 2nd. For all rock plant fanatics (and that's all of us), it is definitely a unique opportunity to attend such an event, and perhaps the last chance to take plants to Belgium or the Netherlands before the Brexit. Departure in Ghent at approx. 06.00 on 02.03.2019 with a comfortable bus.
A second pick-up point in Beernem around 06.35 is foreseen.
By bus on the shuttle train via the canal tunnel from Calais to Folkestone (like last time)
Arrival in Harlow approx. 10.30 am (English time!) - free stay in the sales area.
Show opens for a visit at 12.30
Departure from Harlow approx. 3 pm
Arrival Gent around 9.30 pm
Price ! Like last time, we want to offer you this trip as cheaply as possible.
The price will be 45 €.
Starting today you can make a reservation, by giving the names of the participants and the boarding point to Filip Wauters reisverantwoordelijke@vrvforum.be and by paying the amount of € 45 per participant on the IBAN number BE 63 7340 1078 6308 (BIC address KRED BE BB) from the VRV, stating the names of the participants.
Registrations will close on January 31, 2019."
Loosely translated, but I hope you get the rough meaning.