Thread moved to Credit Card Programs forum because the question pertains to cards from various issuers.

Be aware that Barclays cards will function as Chip & Signature cards in most contexts, even in countries where Chip & PIN is the norm. Their cards will only switch to PIN verification in the rare instance where the payment terminal cannot accept Signature verification.

Consider obtaining a card with Contactless payment feature. These are widely accepted in the UK for routine transactions, and (usually) require neither a PIN nor a Signature.