Thomas's travelogue hilariously highlights the absurdity of the wall as a security measure, as well as illustrating its humanitarian impact on the lives of Palestinians.
The real delight of this show is the way Thomas brings to life – more by force of empathy than any profound talent for impersonation – a curious and engaging cast characters from both sides of the wall.
Though billed as a "ramble", this is actually a meticulously crafted narrative with a very formal, disciplined structure, a seamless construct of comedy and polemic, albeit masked as the scattered recollections of a dilettantish comedian.
The heavier humanitarian points are all carefully tied back into the comic narrative by the extensive use of back-referencing punchlines: the jokes don't stop, but neither does the politics, both coming at you simultaneously.
The humour is terrifically accessible, with Thomas accentuating the self-deprecating bumbling-Brit-abroad angle to undercut any sense of peachiness.
The "ramble" tag also belies Thomas's headlong energy as he compresses all 750km of his journey around the wall into a fleeting 120 minutes. His performance has clearly been well-honed and you couldn't really ask for a trimmer example of passionate comedy.