The UK ranks at 18th place in the index, scoring 60 out of a possible 100. Healthcare in the United Kingdom is mainly provided by England’s public health service – the NHS – meaning that the majority of the 9.6% of GDP spent on healthcare will be used to fund this service.
Despite having the 13th highest spending on healthcare, the UK was brought down to its rank of 18th due to the low number of doctors and beds per capita. source: https://www.healtheuropa.eu/worlds-best-healthcare-systems/92537/

Here is the basic List of UK medical centers with MRI or CT scan capability:

BradfordBradford CT Centre
    Stockton-on-TeesNorth Tees MRI, Cleveland
    Darlington  South Durham MRI70 miles
    Hartlepool  University Hospital Hartlepool MRI Unit
    Stockport  Stockport Imaging Centre
    Manchester  Wythenshawe Hospital Cardiac MRI and CT Centre
    Leicester  Leicester Nuffield  MRI Unit
    Cannock  Cannock MRI
    Kendal  Westmorland  MRI Unit
    St Annes-on-Sea  Fylde Coast Diagnostic Centre
    Chester  Nuffield Health Chester  MRI Unit
    Colchester  Turner Diagnostic Centre – Colchester
    Enfield  Enfield  MRI Centre, Middlesex
    Cheltenham  Cheltenham Nuffield  CT Unit
    London  Bulstrode Place, London
    London  136 Harley Street, London
    Isleworth  West Middlesex MRI Centre
    Ashford  Ashford Hospital, Middlesex
    Beckenham  Sloane Diagnostic Imaging
    Sidcup  Sidcup MRI, Kent
    Sidcup  Sidcup PET-CT Centre
    Epsom  Clock House  Imaging Centre
    Guildford  Guildford Diagnostic Imaging
    Benenden  Benenden Hospital Trust
    Haywards HeathPrincess Royal Hospital MRI Unit
    Southampton  Southampton MRI Unit
    Brighton  Nuffield Brighton MRI and CT Unit
    Bridgwater  Somerset  MRI Unit
    Bournemouth  Bournemouth Nuffield  MRI Unit
    Belfast Mater Infirmorum Hospital
    Belfast Musgrave Park Hospital
    Belfast Musgrave House
    Hillsborough  Hillsborough Scan Centre
    Antrim  Antrim Area Hospita
    Ballykelly  North West Independent Hospital
    Northampton  Northampton Diagnostic Centre
    Wigan  Wrightington Hospital MRI Unit
    Chertsey  St Peter’s Hospital, Chertsey

MRI Health Care centres by Towns list:
London
Barnet
Croydon
Ealing
Enfield
Fitzrovia
Golders Green
Hampton Wick
Hornchurch
Kentish Town
Kingston upon Thames
Ladbroke Grove
Pimlico
Roehampton
Stratford
Tottenham
Waterloo
Willesden
Ashton
Barking
Birmingham
Eastbourne
Fareham
Frimley
Leeds
Lincoln
Manchester
Milton Keynes
North Staffordshire